| Question | Options | Answer |
|---|---|---|
| Light travels in a straight line in a: |
A) Vacuum only B) Straight line path C) Circle D) Zigzag path |
optionB |
| Rectilinear propagation of light means light: |
A) Bends around corners easily B) Travels in straight lines C) Stops in air D) Moves only in water |
optionB |
| The formation of shadows is evidence that light: |
A) Is magnetic B) Travels in straight lines C) Moves slowly D) Cannot be reflected |
optionB |
| Which of the following is a source of light? |
A) Moon B) Mirror C) Candle D) Table |
optionC |
| An object that does not emit light is called: |
A) A luminous object B) An illuminated object C) A transparent object D) A source of light |
optionB |
| The image of a luminous object is seen because light: |
A) Is produced by the eye B) Travels straight to the eye C) Stops in the object D) Changes to sound |
optionB |
| Rectilinear propagation of light is best demonstrated by: |
A) Rainbow formation B) Shadow formation C) Sound reflection D) Heat conduction |
optionB |
| Light cannot bend around: |
A) A candle flame B) A straight edge easily C) A mirror D) A window |
option B |
| The path of light in a homogeneous medium is: |
A) Curved B) Straight C) Random D) Circular |
optionB |
| Light travels fastest in: |
A) Water B) Glass C) Vacuum D) Air |
optionC |
| A shadow is formed when an opaque object: |
A) Emits light B) Blocks light C) Reflects light only D) Produces heat |
optionB |
| The darkest part of a shadow is called: |
A) Penumbra B) Umbra C) Retina D) Reflection |
optionB |
| The lighter outer part of a shadow is called: |
A) Umbra B) Penumbra C) Focus D) Principal axis |
optionB |
| An eclipse of the Sun occurs when: |
A) Earth is between Sun and Moon B) Moon is between Sun and Earth C) Sun is between Earth and Moon D) Earth blocks the Moon |
optionB |
| A lunar eclipse occurs when: |
A) Moon is between Sun and Earth B) Earth is between Sun and Moon C) Sun is between Earth and Moon D) Moon blocks Earth’s shadow |
optionB |
| A solar eclipse can happen only during: |
A) Full moon B) New moon C) First quarter D) Third quarter |
optionB |
| A lunar eclipse can happen only during: |
A) New moon B) Full moon C) Half moon D) Crescent moon |
optionB |
| The pinhole camera works on: |
A) Reflection only B) Refraction only C) Rectilinear propagation of light D) Dispersion of light |
optionC |
| The image formed by a pinhole camera is usually: |
A) Erect and enlarged B) Inverted and diminished C) Erect and same size D) Virtual and magnified |
optionB |
| In a pinhole camera, the image formed is: |
A) Real B) Virtual C) Upright D) Not visible |
optionA |
| During a solar eclipse, the shadow of the: |
A) Moon falls on Earth B) Earth falls on Moon C) Sun falls on Moon D) Stars fall on Earth |
optionA |
| The pinhole in a pinhole camera should be: |
A) Very large B) Very small C) Round and huge D) Any size |
optionB |
| A total solar eclipse occurs when the: |
A) Umbra of the Moon falls on Earth B) Penumbra of the Earth falls on Moon C) Umbra of Earth falls on Sun D) Moon disappears |
optionA |
| A partial eclipse occurs when: |
A) Only umbra is formed B) Only penumbra reaches the observer C) No shadow is formed D) Light is completely absent |
optionB |
| The image in a pinhole camera is formed on: |
A) The lens B) The screen C) The hole D) The object |
optionB |
| Reflection of light means light: |
A) Passes through a medium B) Bounces back from a surface C) Changes into heat D) Is absorbed completely |
optionB |
| The law of reflection states that angle of incidence is equal to: |
A) Angle of deviation B) Angle of refraction C) Angle of reflection D) Angle of incidence |
optionC |
| The incident ray, reflected ray, and normal lie in: |
A) Different planes B) The same plane C) A circle D) Random directions |
optionB |
| The normal is a line drawn: |
A) Along the mirror surface B) Perpendicular to the mirror C) Parallel to the reflected ray D) From the eye to object |
optionB |
| A plane mirror forms an image that is: |
A) Real and inverted B) Virtual and erect C) Real and enlarged D) Virtual and diminished |
optionB |
| The image in a plane mirror is laterally: |
A) Expanded B) Inverted C) Inverted sideways D) Disappearing |
optionC |
| The image formed in a plane mirror is at a distance: |
A) Half the object distance B) Same as object distance behind the mirror C) Double the object distance behind the mirror D) On the mirror surface |
optionB |
| The size of an image in a plane mirror is: |
A) Larger than the object B) Smaller than the object C) Same as the object D) Zero |
optionC |
| Plane mirrors produce images that cannot be: |
A) Seen on a screen B) Erect C) Same size D) Laterally inverted |
optionA |
| If the angle of incidence is $30^\circ$, the angle of reflection is: |
A) 150 B) 300 C) 600 D) 900 |
optionB |
| A ray striking a mirror perpendicular to the surface is reflected: |
A) 450 B) 900 C) Back along the same path D) Randomly |
optionC |
| The reflected ray is always on the opposite side of the: |
A) Object B) Normal C) Screen D) Prism |
optionB |
| A plane mirror can be used to: |
A) Change the speed of light B) Form a virtual image C) Split white light D) Magnify images |
optionB |
| The image formed by a plane mirror is: |
A) In front of the mirror B) Behind the mirror C) Inside the mirror glass D) On the object |
optionB |
| The law of reflection is obeyed by: |
A) Only plane mirrors B) Only water surfaces C) All reflecting surfaces D) Only convex mirrors |
optionC |
| A plane mirror is used in: |
A) Periscope B) Telescope only C) Microscope only D) Spectrometer only |
optionA |
| A plane mirror is used by drivers as: |
A) Rear-view mirror B) Front lens C) Screen D) Window glass |
optionA |
| The mirror formula is: |
A) f = u + v B) 1/f= 1/v+ 1/u C) 1/f= 1/v- 1/u D) f = uv |
optionC |
| For a plane mirror, the focal length is: |
A) Zero B) Infinite C) Negative D) Equal to object distance |
optionB |
| The magnification of a plane mirror is: |
A) 0 B) 1 C) 2 D) Infinite |
optionB |
| If an object is 10cm in front of a plane mirror, its image is: |
A) 1.5m behind the mirror B) 3.0m behind the mirror C) 6.0m behind the mirror D) On the mirror surface |
optionB |
| The distance between object and image in a plane mirror is: |
A) Equal to object distance B) Twice the object distance C) Half the object distance D) Zero |
optionB |
| If the object height is 10cm, the plane mirror image height is: |
A) 5cm B) 10 cm C) 15 cm D) 20 cm |
optionB |
| A dentist uses a mirror mainly to: |
A) Produce a real image B) See enlarged upright images C) Reflect sound D) Produce color |
optionB |
| The number of images formed by two plane mirrors depends on their: |
A) Color B) Angle between them C) Thickness D) Weight |
optionB |
| If two plane mirrors are parallel, the number of images is: |
A) One B) Two C) Infinite D) Zero |
optionC |
| A periscope works using: |
A) Refraction through lenses B) Reflection in plane mirrors C) Dispersion through prism D) Absorption of light |
optionB |
| In a plane mirror, the image is: |
A) Inverted vertically B) Upright C) Magnified D) Reduced |
optionB |
| A person standing 2.0 m in front of a plane mirror sees the image at: |
A) 1m behind the mirror B) 2m behind the mirror C) 4m behind the mirror D) 6m behind the mirror |
optionB |
| The image in a plane mirror is called virtual because it: |
A) Can be caught on a screen B) Appears to come from behind the mirror C) Is always upside down D) Is always larger than the object |
optionB |
| A curved mirror whose reflecting surface bulges outward is: |
A) Concave mirror B) Convex mirror C) Plane mirror D) Cylindrical mirror |
optionB |
| A curved mirror whose reflecting surface curves inward is: |
A) Convex mirror B) Concave mirror C) Plane mirror D) Prism |
optionB |
| A convex mirror always forms an image that is: |
A) Real and inverted B) Virtual and diminished C) Real and enlarged D) Virtual and magnified |
optionB |
| A concave mirror can form a real image when the object is placed: |
A) Between focus and mirror B) Beyond the focus C) At the pole only D) At the center of glass |
optionB |
| The principal focus of a concave mirror is where rays parallel to the principal axis: |
A) Diverge from B) Converge at C) Stop at D) Bend away from |
optionB |
| The center of curvature is the center of the: |
A) Mirror surface B) Sphere of which the mirror is part C) Image D) Focus |
optionB |
| The principal axis is a line passing through: |
A) The center of curvature and pole B) The image and object C) The focus only D) The edge of mirror |
optionA |
| Refraction is the: |
A) Bouncing back of light B) Splitting of light C) Bending of light as it passes from one medium to another D) Blocking of light |
optionC |
| Light bends towards the normal when it moves from: |
A) Water to air B) Air to water C) Glass to air D) Water to vacuum |
optionB |
| Light bends away from the normal when it moves from: |
A) Air to glass B) Water to glass C) Water to air D) Air to water |
optionC |
| The bending of light in refraction is due to change in: |
A) Color B) Speed C) Temperature only D) Brightness only |
optionB |
| A lens works mainly on the principle of: |
A) Reflection B) Refraction C) Dispersion only D) Absorption |
optionB |
| A concave mirror is used in: |
A) Vehicle side mirrors only B) Searchlights and shaving mirrors C) Window glass D) Spectacles for all defects |
optionB |
| A convex mirror is useful in vehicles because it: |
A) Gives a narrow field of view B) Gives a wide field of view C) Forms real images only D) Produces large images |
optionB |
| The image formed by a convex mirror is always: |
A) Real, inverted, and enlarged B) Virtual, erect, and diminished C) Real, erect, and diminished D) Virtual, inverted, and enlarged |
optionB |
| Dispersion of light is the splitting of white light into: |
A) Sound waves B) Its component colors C) Heat rays D) Electric charges |
optionB |
| The instrument that causes dispersion is a: |
A) Mirror B) Prism C) Lens only D) Screen |
optionB |
| The band of colors formed by dispersion is called: |
A) Spectrum B) Shadow C) Focus D) Image |
optionA |
| The color with the least deviation in a prism is: |
A) Red B) Violet C) Blue D) Green |
optionA |
| The color with the greatest deviation in a prism is: |
A) Red B) Yellow C) Violet D) Orange |
optionC |
| White light is made up of: |
A) Only red and blue B) All colors of visible light C) Only three colors D) No colors |
optionB |
| Additive mixing of red, green, and blue light produces: |
A) Black B) White C) Brown D) Yellow only |
optionB |
| In additive color mixing, the primary colors are: |
A) Red, yellow, blue B) Red, green, blue C) Cyan, magenta, yellow D) Black, white, grey |
optionB |
| Subtractive color mixing is common in: |
A) Television screens B) Printed materials and paints C) Laser beams D) Mirrors |
optionB |
| The primary colors for subtractive mixing are: |
A) Red, green, blue B) Cyan, magenta, yellow C) Red, yellow, blue D) White, black, grey |
optionB |
| When all subtractive colors are mixed, the result is: |
A) White B) Black C) Blue D) Yellow |
optionB |
| A rainbow is formed due to: |
A) Reflection only B) Dispersion and refraction of sunlight C) Absorption only D) Sound waves |
optionB |
| A prism is used because different colors of light have different: |
A) Densities only B) Speeds in glass C) Masses D) Temperatures |
optionB |
| Yellow light is a: |
A) Primary color of light in additive mixing B) Secondary color of light in additive mixing C) Subtractive primary color D) Invisible color |
optionB |
| Magenta is: |
A) A primary color in additive mixing B) A primary color in subtractive mixing C) Not a color D) A shadow |
optionB |
| The eye lens focuses light on the: |
A) Pupil B) Retina C) Cornea D) Iris |
optionB |
| The image formed on the retina is: |
A) Virtual and erect B) Real and inverted C) Real and erect D) Virtual and inverted |
optionB |
| The part of the eye that controls the amount of light entering is the: |
A) Retina B) Iris C) Cornea D) Lens |
optionB |
| The hole through which light enters the eye is the: |
A) Pupil B) Cornea C) Sclera D) Retina |
optionA |
| A camera forms an image on: |
A) Film or sensor B) Lens only C) Mirror D) Prism |
optionA |
| The lens used in a camera is mainly: |
A) Concave lens B) Convex lens C) Plane lens D) Cylindrical lens |
optionB |
| A microscope is used to: |
A) See distant stars B) View very small objects C) Measure sound D) Produce shadows |
optionB |
| A telescope is used to: |
A) View very small objects B) View distant objects C) Measure temperature D) Split light |
optionB |
| Spectacles are used to correct: |
A) Light dispersion B) Defects of vision C) Shadow formation D) Sound waves |
optionB |
| Short-sightedness is corrected using a: |
A) Convex lens B) Concave lens C) Plane mirror D) Prism |
optionB |
| Long-sightedness is corrected using a: |
A) Concave lens B) Convex lens C) Plane mirror D) Red filter |
optionB |
| The eye disorder in which distant objects are seen clearly but near objects are blurred is: |
A) Myopia B) Hypermetropia C) Astigmatism D) Cataract |
optionB |
| The eye disorder in which near objects are seen clearly but distant objects are blurred is: |
A) Myopia B) Hypermetropia C) Color blindness D) Glaucoma |
optionA |
| The camera and the human eye are similar because both have: |
A) Retina and pupil B) Lens and screen/image surface C) Two pupils D) No lens |
optionB |
| The main function of the retina is to: |
A) Control light B) Receive the image C) Produce tears D) Protect the eye |
optionB |
| SSS ONE PHYSICS A projectile is an object that moves under the influence of |
A) friction only B) gravity only C) magnetic force only D) electric force only |
optionB |
| The horizontal velocity of a projectile, neglecting air resistance, is |
A) increasing B) decreasing C) constant D) zero |
optionC |
| The vertical acceleration of a projectile is |
A) 0ms-2 B) gms-2 downward C) gms-2 upward D) constant and upward |
optionB |
| The path of a projectile is usually |
A) circular B) straight line C) parabolic D) elliptical |
optionC |
| The time of flight of a projectile depends on |
A) only horizontal velocity B) only vertical motion C) only mass D) only air resistance |
optionB |
| At the highest point of a projectile’s path, the vertical velocity is |
A) maximum B) minimum but not zero C) zero D) equal to horizontal velocity |
optionC |
| The range of a projectile is the |
A) maximum height reached B) horizontal distance travelled C) vertical distance travelled D) total speed |
optionB |
| For a given initial speed, the maximum range is obtained when the angle of projection is |
A) 30° B) 45° C) 60° D) 90° |
optionB |
| Neglecting air resistance, the horizontal and vertical motions of a projectile are |
A) dependent B) independent C) opposite D) equal |
optionB |
| The force acting on a projectile after it is launched is usually |
A) tension B) thrust C) gravity D) lift |
optionC |
| Surface tension is mainly due to |
A) gravity B) cohesion between liquid molecules C) adhesion only D) pressure from air |
optionB |
| Surface tension causes liquid surfaces to behave like |
A) a sponge B) a stretched membrane C) a solid rod D) a gas bubble |
optionB |
| Capillarity is the rise or fall of liquid in a |
A) bottle B) wide container C) narrow tube D) beaker only |
optionC |
| Water rises in a clean glass tube because of |
A) cohesion only B) adhesion to glass C) gravity only D) atmospheric pressure only |
optionB |
| Mercury in a glass tube forms a depressed meniscus because |
A) adhesion is greater than cohesion B) cohesion is greater than adhesion C) viscosity is low D) capillarity is zero |
optionB |
| The force of attraction between like molecules is called |
A) adhesion B) cohesion C) friction D) tension |
optionB |
| The force of attraction between unlike molecules is called |
A) cohesion B) viscosity C) adhesion D) elasticity |
optionC |
| Viscosity is the |
A) ability of a liquid to flow B) resistance of a fluid to flow C) force of attraction between solids D) pressure of a gas |
optionB |
| Which liquid is most viscous? |
A) Water B) Kerosene C) Honey D) Alcohol |
optionC |
| As temperature increases, the viscosity of a liquid generally |
A) increases B) decreases C) remains constant D) becomes infinite |
optionB |
| Elasticity is the ability of a material to |
A) conduct electricity B) return to its original shape after deformation C) melt easily D) resist heating |
optionB |
| The maximum stress a material can withstand without permanent deformation is called |
A) elasticity limit B) yield point C) tensile strength D) strain |
optionA |
| Hooke’s law states that, within the elastic limit, extension is proportional to |
A) temperature B) force C) mass only D) length only |
optionB |
| The mathematical form of Hooke’s law is |
A) F = ma B) F = kx C) V = IR D) P = mgh |
optionB |
| In F = kx the constant kis called |
A) force constant B) density constant C) pressure constant D) expansion constant |
optionA |
| The unit of spring constant is |
A) newton B) newton per metre C) metre per newton D) joule |
optionB |
| Strain is |
A) force per unit area B) extension divided by original length C) original length divided by extension D) mass per unit volume |
optionB |
| Stress is defined as |
A) force per unit area B) force times area C) extension per unit length D) work done per second |
optionA |
| A material that regains its shape after the force is removed is said to be |
A) plastic B) elastic C) brittle D) rigid |
optionB |
| Which of the following is most elastic? |
A) Rubber band B) Steel C) Clay D) Wax |
optionB |
| A crystal is a solid with |
A) random arrangement of particles B) no fixed melting point C) regular arrangement of particles D) particles in gas state |
optionC |
| The basic unit repeated in a crystal structure is called the |
A) molecule B) unit cell C) nucleus D) lattice defect |
optionB |
| Which of these is an amorphous solid? |
A) Salt B) Quartz C) Glass D) Diamond |
optionC |
| Crystals usually have |
A) irregular shapes B) sharp melting points C) no definite form D) no internal order |
optionB |
| The arrangement of particles in a crystal is called |
A) lattice B) viscosity C) capillarity D) diffusion |
optionA |
| Which is a crystalline substance? |
A) Plastic B) Sugar C) Rubber D) Wax |
optionB |
| Crystals are generally |
A) isotropic in all properties B) anisotropic in some properties C) liquid-like D) always transparent |
optionB |
| The particles in a crystal are held together by |
A) random motion only B) fixed positions and forces of attraction C) no forces D) magnetic repulsion |
optionB |
| A property of many crystals is that they |
A) have no symmetry B) show symmetry C) are always flexible D) are gases at room temperature |
optionB |
| Common table salt is an example of a |
A) crystalline solid B) amorphous solid C) liquid crystal D) gas |
optionA |
| Matter is made up of tiny particles called |
A) atoms and molecules B) cells C) planets D) ions only |
optionA |
| Brownian motion is evidence that particles of matter |
A) are stationary B) move randomly C) are very large D) have no mass |
optionB |
| Diffusion occurs fastest in |
A) solids B) liquids C) gases D) metals only |
optionC |
| The particles in a gas are |
A) closely packed and fixed B) far apart and moving freely C) arranged in layers D) motionless |
optionB |
| Solids have definite shape because their particles |
A) are widely separated B) are tightly packed C) have no attraction D) move very fast |
optionB |
| Which state of matter is most compressible? |
A) Solid B) Liquid C) Gas D) Plasma is not considered here |
optionC |
| Increase in temperature usually causes particles to |
A) move slower B) stop moving C) move faster D) become heavier |
optionC |
| The force between particles of matter is strongest in |
A) gases B) liquids C) solids D) plasma only |
optionC |
| The spaces between particles are largest in |
A) solids B) liquids C) gases D) crystals only |
optionC |
| The particle theory of matter helps explain |
A) only sound B) only electricity C) states of matter and diffusion D) only magnetism |
optionC |
| Electric current is the flow of |
A) neutrons B) protons C) electrons D) atoms |
optionC |
| The SI unit of electric current is |
A) volt B) ampere C) ohm D) watt |
optionB |
| Ohm’s law states that current is directly proportional to |
A) resistance B) voltage C) power D) charge only |
optionB |
| The formula for Ohm’s law is |
A) V = IR B) P = VI C) E = mc^2 D) F = ma |
optionA |
| In the formula V = IR, R represents |
A) resistance B) reactance C) resistance ratio D) radiation |
optionA |
| The unit of resistance is |
A) ampere B) volt C) ohm D) coulomb |
optionC |
| If voltage increases and resistance remains constant, current |
A) decreases B) increases C) remains the same D) becomes zero |
optionB |
| A device used to measure electric current is |
A) voltmeter B) ammeter C) barometer D) thermometer |
optionB |
| An instrument used to measure potential difference is |
A) ammeter B) galvanometer C) voltmeter D) ohmmeter only |
optionC |
| Resistance depends on all the following except |
A) length of conductor B) area of cross-section C) material of conductor D) colour of conductor |
optionD |
| Most materials expand when heated because their particles |
A) stop moving B) move faster and farther apart C) become heavier D) lose mass |
optionB |
| Thermal expansion in solids is usually |
A) very large B) small but significant C) impossible D) only in liquids |
optionB |
| Which expands the most for the same temperature rise? |
A) Solids B) Liquids C) Gases D) Glass |
optionC |
| Water shows unusual expansion between |
A) 0°cand 4°c B) 4°cand 10°c C) -4°c and 0°c D) 100°c and 4°c |
optionA |
| The expansion of a solid in only one direction is called |
A) areal expansion B) linear expansion C) volume expansion D) irregular expansion |
optionB |
| The expansion of a solid in area is called |
A) linear expansion B) surface or areal expansion C) cubic expansion D) capillary expansion |
optionB |
| The expansion of a body in volume is called |
A) linear expansion B) areal expansion C) cubical expansion D) fractional expansion |
optionC |
| Glass is used in thermometers because it |
A) does not expand at all B) expands predictably and uniformly C) expands too much D) is a liquid |
optionB |
| The liquid commonly used in thermometers because it expands uniformly is |
A) water B) mercury C) oil only D) alcohol only |
optionB |
| A bimetallic strip works because different metals have different |
A) colours B) melting points C) rates of expansion D) densities only |
optionC |
| The trajectory of a projectile is affected by |
A) gravity and initial speed B) colour of the object C) sound waves D) electric charge only |
optionA |
| The surface tension of a liquid decreases when |
A) temperature increases B) temperature decreases C) pressure becomes zero D) the liquid freezes |
optionA |
| Which of the following is a sign of adhesion? |
A) Water droplets on a wax surface B) Water sticking to glass C) Mercury forming beads on glass D) Oil floating on water |
optionB |
| A fluid with high viscosity |
A) flows easily B) flows slowly C) has no mass D) has no resistance |
optionB |
| Elastic limit is the point beyond which a material |
A) returns perfectly to original shape B) behaves like a liquid C) undergoes permanent deformation D) becomes colder |
optionC |
| A crystal lattice is a |
A) random pattern B) regular 3D arrangement of particles C) liquid structure D) gas container |
optionB |
| Diffusion is faster in gases because the particles are |
A) farther apart and move faster B) heavier C) fixed in position D) larger in size |
optionA |
| If the resistance of a wire is doubled and the voltage is constant, the current becomes |
A) doubled B) halved C) unchanged D) zero |
optionB |
| Expansion of solids may cause |
A) railway track buckling B) decrease in length of bridge C) no effect D) increase in density only |
optionA |
| The motion of gas particles is |
A) random and rapid B) fixed and slow C) only circular D) only vertical |
optionA |
| The force responsible for restoring a stretched spring is called |
A) magnetic force B) restoring force C) gravitational force D) frictional force |
optionB |
| In a simple electric circuit, current flows only when the circuit is |
A) open B) closed C) broken D) disconnected |
optionB |
| Which state of matter has a fixed shape and fixed volume? |
A) Solid B) Liquid C) Gas D) Vapour |
optionA |
| Which state of matter has fixed volume but no fixed shape? |
A) Solid B) Liquid C) Gas D) Plasma |
optionB |
| Which of the following is an example of capillarity in nature? |
A) Water rising in plant xylem B) Sand sinking in water C) Ice melting D) Stone falling |
optionA |
| The ability of materials to regain their shape after stretching is important in |
A) springs B) pencils C) glass cups D) chalk |
optionA |
| The particle model of matter assumes that particles are |
A) continuously created B) in constant motion C) motionless in all states D) visible to the naked eye |
optionB |
| The flow of charge in a conductor is called |
A) voltage B) resistance C) current D) power |
optionC |
| A substance that does not obey Hooke’s law at large extensions has |
A) no elasticity B) exceeded the elastic limit C) no mass D) no resistance |
optionB |
| Mercury is not a good liquid for wetting glass because |
A) it is not a liquid B) cohesion is greater than adhesion C) adhesion is greater than cohesion D) it has no surface tension |
optionB |
| The bending of a bimetallic strip on heating is due to |
A) equal expansion of both metals B) different expansion rates C) gravity D) magnetic effects |
optionB |
| A higher spring constant means the spring is |
A) softer B) stiffer C) weaker D) longer |
optionB |
| The SI unit of strain is |
A) newton B) pascal C) no unit D) metre |
optionC |
| A perfectly rigid body is one that |
A) expands a lot B) does not deform under force C) melts easily D) conducts electricity |
optionB |
| The rate at which a gas diffuses is usually |
A) very slow B) faster than solids and liquids C) zero D) the same as solids |
optionB |
| Current in metals is due to the movement of |
A) protons B) ions C) electrons D) neutrons |
optionC |
| Resistance in a wire increases when its |
A) length increases B) area increases C) temperature decreases greatly D) material changes to a better conductor |
optionA |
| Glass is described as an amorphous solid because it |
A) has a crystalline lattice B) has no regular long-range order C) is a liquid at room temperature D) conducts electricity well |
optionB |
| The phenomenon that helps a paper towel absorb water is |
A) viscosity B) adhesion and capillarity C) elasticity D) resistance |
optionB |
| The relation between current, voltage, and resistance is called |
A) Newton’s law B) Hooke’s law C) Ohm’s law D) Boyle’s law |
optionC |
| SS2 PHYSICS A car moves with a speed of 30m/s. calculate the distance travelled in 30seconds? |
A) 30m B) 60m C) 45m D) 900m |
optionD |
| When table salt is added to ice the melting point of the ice? |
A) raised B) lowered C) remained unchanged D) is first raised then lowered |
optionB |
| A concave mirror of radius of curvature 20cm has a pin placed at 15cm from its pole. What will be magnification of the image formed? |
A) 4 B) 2 C) 1.33 D) 1.5 |
optionB |
| Dew point is not affected by |
A) temperature B) wind C) the amount of water vapour in the atmosphere D) atmospheric pressure |
optionB |
| An image which can be formed on a screen is said to be |
A) virtual B) real C) erect D) inverted |
optionB |
| What part of the camera corresponds to the iris of the eye? |
A) shutter B) diaphragm C) lens D) film |
optionB |
| The image of a pin hole camera is always |
A) enlarged B) inverted C) diminished D) upright |
optionB |
| A source of sound produces waves in air of wave length 1.65m. If the speed of sound in air is 330m/s, the period of vibration in second is |
A) 200 B) 2.0 C) 0.005 D) 0.02 |
optionC |
| A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is 340m/s, how far is he from the cliff? |
A) 34m B) 170m C) 680m D) 85m |
optionD |
| How far will a body move in 4second if uniformly accelerated from rest at the rate of 2m/s |
A) 32m B) 16m C) 24m D) 8m |
optionB |
| A gas has a volume of 546cm3 at 0oC. What is the volume of the gas at 100oC if its pressure remains constant |
A) 346cm3 B) 446cm3 C) 746cm3 D) 646cm3 |
optionC |
| A steam trap is a component of the apparatus used in determines the specific latent heat of vapourization of steam. In steady state the steam trap |
A) store the steam for future used B) prevent heat from escaping C) ensure that only dry steam to go into the calorimeter D) allow condensed steam to go into the calorimeter |
optionC |
| Hot water at a temperature of t is added to twice the amount of water at a temperature of 30oC. If the resulting temperature of the mixture is 50oC calculate t |
A) 80oC B) 90oC C) 50oC D) 40oC |
optionB |
| The inside of vacuum flask is usually coated with silver to reduce lost to |
A) convection B) conduction C) radiation D) evaporation |
optionC |
| Cloud formation is the direct result of |
A) precipitation B) condensation C) sublimation D) vaporization |
optionB |
| An object is heated from 30oC to 70oC. The increase in its temperature on the Kelvin scale is? |
A) 17k B) 27k C) 313k D) 81k |
optionC |
| How much heat is emitted when a body of mass 200g cools from 37oC to 31oC [specific heat capacity of the body is 0.4j/g/k] |
A) 4800j B) 1200j C) 420j D) 480j |
optionD |
| The ability of eye to focus objects at different distances is called |
A) power of len B) accommodation C) long slightness D) normal vision |
optionB |
| The change of the direction of a wave front because of a change in the velocity of the wave in another medium is called |
A) reflection B) incidence C) refraction D) emergence |
optionC |
| The image of an object placed at 2f from a concave mirror is |
A) real, diminished and inverted B) real, magnified and inverted C) virtual, same size and inverted D) real, same size and inverted |
optionD |
| An object is placed 20.0cm from a converging lens. If the real image formed is 80.0 cm from the object the focal length of the lens is |
A) 15.0cm B) 16.0cm C) 30.0cm D) 22.5cm |
optionA |
| The angle of deviation of light of various colours passing through a glass prism decreases in the order of |
A) blue, orange and red B) red, blue and orange C) blue, red and orange D) red, orange and blue |
optionA |
| Which of the following is a percussion instrument? |
A) flute B) organ C) bell D) piano |
optionC |
| A ray of light strikes a plane mirror at a glancing angle of 50o. Calculate the angle between the incident and reflected rays |
A) 80o B) 100o C) 40o D) 50o |
optionA |
| In which of the following media would sound waves travel fastest? |
A) air B) kerosene C) iron D) water |
optionC |
| The refractive index of a medium relative to air is 1.8. Calculate the critical angle for the medium to the nearest degree |
A) 18o B) 34o C) 45o D) 68o |
optionB |
| Which of the following instruments produces sound by the vibration of air column? |
A) flute B) talking drum C) guitar D) hand bell |
optionA |
| The wall and ceilings of many standard auditoria are covered with perforated pads to |
A) increases the intensity of sound waves B) increases the loudness of sound waves C) reduces the effect of reverberation of sound waves D) decreases the frequency of sound waves |
optionC |
| The angle of incidence of a ray of light on a pane mirror is 550. Determine the angle between the reflected ray and the mirror |
A) 350 B) 450 C) 550 D) 1100 |
optionA |
| A ray of light strikes a plane mirror at a glancing angle of 550. Calculate the angle between the incidents and reflected |
A) 350 B) 450 C) 700 D) 1100 |
optionC |
| Two plane mirrors are inclined at an angle 200 to each other. Determine the number of images formed when an object is placed between them |
A) 17 B) 18 C) 19 D) 20 |
optionA |
| The instrument used for measuring the angle of elevation of the sun is called |
A) altimeter B) sextant C) kaleidoscope D) periscope |
optionB |
| Image formed by a convex mirror are always |
A) magnified B) behind the mirror C) real D) inverted |
optionB |
| An object of height 2.5cm is placed 20cm from a convex mirror of focal length 10cm. calculate the height of its image |
A) 2.5cm B) 3.0cm C) 5.0cm D) 0.83.0cm |
optionD |
| Calculate the critical angle in glass for light traveling from glass to water (R.I of water 1.33, R.I of glass =1.50) |
A) 41.80 B) 48.60 C) 62.50 D) 60.00 |
optionC |
| When a yellow card is viewed in blue light, it will appear |
A) orange B) black C) white D) purple |
optionB |
| Complementary colors are those which |
A) have the same refractive index B) have the same wavelength C) add-up to produce black light D) add-up to produce white light |
optionD |
| Which of the following relations about the focal length fo of the objective and focal length fe of the eye piece of a compound microscope is correct |
A) fo=fe B) fo˂fe C) fo˃fe D) fe=2fo |
optionB |
| A magnified and virtual image of a near object is produced by |
A) Prism binocular B) Astronomical telescope C) Periscope D) Simple microscope |
optionD |
| Which of the following makes use of a concave mirror |
A) camera B) periscope C) slide projector D) simple microscope |
optionC |
| Two sound waves have frequencies of 12Hz and 10Hz. Calculate their best period |
A) 0.5s B) 1.0s C) 1.2s D) 2.0s |
optionA |
| A pipe closed at one end has a length of 15cm. calculate the frequency of the fundamental note |
A) 560Hz B) 567Hz C) 700Hz D) 198Hz |
optionA |
| A string under tension produces a note of frequency 14Hz. Determine the frequency when the tension is quadrupled |
A) 14Hz B) 18Hz C) 28Hz D) 56Hz |
optionC |
| The short slightness an eye defect can be corrected using |
A) concave lens B) convex lens C) bifocal lens D) cylindrical lensA |
option |
| The main disadvantage of Astronomical telescope its final image is |
A) inverted B) upright C) real D) diminished |
optionA |
| Terrestrial telescope used inverting lens which makes the image |
A) real B) enlarged C) upright D) inverted |
optionC |
| Which of the following is not a self luminous objects |
A) sun B) stars C) moon D) glow worm |
optionC |
| One of the natural effect of rectilinear propagation of light is |
A) Eclipses B) pinhole camera C) mirage D) color dispension |
optionA |
| Calculate the power rating of an immersion heater used for 10minutes to increase the temperature of 19kg of water by 15k. [Specific heat capacity of water =4200jkg/k] |
A) 1,050w B) 16,800w C) 18,060w D) 20,160w |
optionA |