Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

 Que- Which of the following parts of the sunlight makes the solar cooker hot ? 

a. Ultra violet 

b. Red light 

c. Infra red 

d. Cosmic rays 

Answer- Infra red

Que- In the atmosphere ultraviolet rays are absorbed by 

a. Oxygen 

b. Nitrogen 

c. Ozone 

d. Helium 

Answer- Oxygen

Que- Energy of Ultraviolet rays is great than 

a. Infrared rays 

b. Gamma rays 

c. X-rays 

d. Cosmic rays 

Answer- Infrared rays

Que- What is the reason for twinkling of stars ? 

a. Dispersion of light 

b. Total internal reflection 

c. Atmospheric reflection 

d. Atmospheric refraction 

Answer- Atmospheric refraction

Que- The basic reason for the extraordinary sparkle of suitably cut diamond is that 

a. It has well defined cleavage planes 

b. It has a very high transparency 

c. It has a very high refractive index 

d. It is very hard 

Answer- It has a very high refractive index

Que- Refractive Index of glass with respect to water is 

a. 4/3 

b. 9/8 

c. 2/3 

d. 8/9 

Answer- 9/8

Que- Which of the following colour of light deviates least through the prism? 

a. Yellow 

b. Green 

c. Violet 

d. Red 

Answer- Red

Que- Bending of light rays in denser medium is termed as: 

a. Reflection 

b. Dispersion 

c. Refraction 

d. Deflection 

Answer- Refraction

Que- Fibre optics work on the principle of 

a. Scattering of light 

b. Total internal absorption 

c. Total internal reflection 

d. Optical rotation 

Answer- Total internal reflection

Que- What is colour of light related to ? 

a. Amplitude 

b. Frequency 

c. Quality 

d. Velocity 

Answer- Amplitude

Que- The redness in atmosphere at Sunrise and Sunset is due to : 

a. Refraction of light 

b. Reflection of light 

c. Dispersion of light 

d. Scattering of light 

Answer- Scattering of light

Que- The sky appears blue due to 

a. Rayleigh scattering 

b. Mie scattering 

c. Back scattering 

d. None of the above 

Answer- Rayleigh scattering

Que- What is a compound microscope? 

a. A microscope that has one lens. 

b. A microscope that has two sets of lenses : an occular lens and an eyepiece. 

c. A microscope whose lenses are concave. 

d. A microscope whose lenses are convex. 

Answer- A microscope that has two sets of lenses : an occular lens and an eyepiece.

Que- Stars appears to move from east to west because 

a. All stars move from east to west 

b. The earth rotates from west to east 

c. The earth rotates from east to west 

d. The background of the stars moves from west to east 

Answer- The earth rotates from west to east

Que- Pa(Pascal) is the unit for 

a. Thrust 

b. Pressure 

c. Frequency 

d. Conductivity 

Answer- Pressure

Que- Planets do not twinkle because 

a. They emit light of a constant intensity 

b. Their distance from the earth does not  change with time 

c. They are very far away from the earth resulting in decrease in intensity of light 

d. They are nearer to earth and hence we receive a greater amount of light. 

Answer- They are nearer to earth and hence we receive a greater amount of light.

Que- Metals are good conductors of electricity because: 

a. They contain free electrons. 

b. The atoms are lightly packed. 

c. They have high melting point. 

d. All of the above. 

Answer- They contain free electrons.

Que- Let a thin capillary tube be replaced with another tube of insufficient length then, we find water 

a. will overflow 

b. will not rise 

c. depressed 

d. change its meniscus 

Answer- will not rise

Que- A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is : 

a. 3:4 

b. 5:4 

c. 5:1 

d. 3:2 

Answer- 3:2

Que- Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be 

a. P 

b. 3P 

c. P/3 

d. 2p/ 3 

Answer- 3P

Que- A galvanometer can be converted into a voltmeter by connecting with it a 

a. High resistance in parallel 

b. Low resistance on parallel 

c. High resistance on series 

d. Low resistance in series 

Answer- High resistance on series

Que- In superconductors, the energy gap is due to 

a. Electron-electron interaction  

b. Electron-phonon interaction  

c. Phonon-phonon interaction  

d. Electron-photon intercation  

Answer- Electron-phonon interaction 

Que- Electrical Pressure is also called 

a. Current 

b. Voltage 

c. Resistance 

d. Power 

Answer- Voltage

Que- Ball pen functions on the principle of : 

a. Viscosity 

b. Boyle's Law 

c. Gravitational force 

d. Surface tension 

Answer- Surface tension

Que- When a detergent is added to pure water, its surface tension 

a. Increases 

b. Decreases 

c. Remains constant 

d. Becomes infinite 

Answer- Decreases

Que- Pieces of camphor placed on water move about rapidly. This is because of 

a. Diffusion 

b. Viscosity 

c. Surface tension 

d. Capillarity 

Answer- Surface tension

Que- What is unit of Viscosity ? 

a. Coulomb 

b. Newton second per square meter 

c. Watt per meter per degree celcius 

d. Joule per kilogram per Kelvin 

Answer- Newton second per square meter

Que- The hair of shaving brush clings together when removed from water due to 

a. Surface tension 

b. Viscosity 

c. Elasticity 

d. Friction 

Answer- Surface tension

Que- The SI unit of Heat is________?  

a. Watt  

b. Volt  

c. Joule  

d. Newton 

Answer- Joule

Que- Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet? 

a. 2.5  

b. 2.0  

c. 1.75  

d. 1.5 

Answer- 1.5

Que- The branch of science which deals with the properties of matter and energy is called__________?  

a. Biology  

b. Geography  

c. Physics  

d. Chemistry 

Answer- Physics

Que- Physics is one of the branches of___________?  

a. Physical sciences  

b. Biological sciences  

c. Social science  

d. Life sciences branch 

Answer- Physical sciences

Que- Which branch of science plays an important role in engineering?  

a. Biology  

b. Chemistry  

c. Physics  

d. All of these 

Answer- Physics

Que- The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is_________?  

a. biology  

b. physics  

c. information technology  

d. chemistry 

Answer- physics

Que- The Branch of Physics deals with highly energetic ions is called__________?  

a. Elementary articles  

b. Article physics  

c. Ionic physics  

d. Plasma physics 

Answer- Plasma physics

Que- The__________branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?  

a. Solid State Physics  

b. Plasma Physics  

c. structure is called  

d. Nuclear Physics  

Answer- Nuclear Physics

Que- The branch of Physics which deals with properties of gravitational?  

a. Field theory  

b. Acoustics  

c. Hydro dynamic  

d. Optics 

Answer- Field theory

Que- The branch of physics which deals with the living things is called_________?  

a. biological sciences  

b. physical sciences  

c. cell systems  

d. elementary physics 

Answer- biological sciences

Que- The physics of moving charge particles is known as__________?  

a. Plasma physics  

b. Electro-static's  

c. Electro-magnetic  

d. Electro-dynamics 

Answer- Electro-dynamics

Que- Study of living science relates with________?  

a. Physical science  

b. Biological science  

c. Just living science  

d. Organ science 

Answer- Biological science

Que- The first book of Physics was written by__________?  

a. Kelvin  

b. Newton  

c. Aristotle  

d. Faraday 

Answer- Aristotle

Que- Which one of the following is massless? 2 

a. Proton  

b. Electron  

c. Neutron  

d. Photon Read More Details about this Mcq 

Answer- Photon

Que- Name the branch of science which deals with the study of sound and sound waves?  

a. Aeronautics  

b. Acoustics  

c. Aerostatics  

d. Aetiology 

Answer- Acoustics

Que- The formula of inter-conversion of centigrade and Fahrenheit scale is___________?  

a. c-32/9  

b. f -32/9 =c/5  

c. f-32/9=c/9  

d. none 

Answer- f -32/9 =c/5

Que- The co efficient of linear expansion is equal to__________?  

a. ΔL = αLΔT  

b. ΔL/LΔT  

c. LΔT/ΔL  

d. αLΔT-ΔL 

Answer- ΔL = αLΔT

Que- The unit of coefficient of linear expansion or volume expansion is__________?  

a. K  

b. K-1  

c. K -2  

d. none 

Answer- K-1

Que- linear expansion occurs in_________?  

a. solid  

b. liquid  

c. both  

d. none 

Answer- solid

Que- When body is in motion, ____________ always changes?  

a. its velocity  

b. its acceleration  

c. its position vector  

d. its momentum 

Answer- its position vector

Que- A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is ____________________?  

a. 10m/s  

b. 36m/s  

c. zero  

d. infinite 

Answer- zero

Que- Area under velocity time graph represent_____________________?  

a. force  

b. displacement  

c. distance  

d. acceleration 

Answer- displacement

Que- Instantaneous and average velocities become equal when body___________________?  

a. has zero acceleration  

b. has uniform acceleration  

c. has variable acceleration  

d. moves in a circle 

Answer- has zero acceleration

Que- Inertia of an object is quantitative measure of its__________________?  

a. volume  

b. density  

c. mass  

d. temperature 

Answer- mass

Que- 1st law of motion gives the definition of _________________________?  

a. rest  

b. motion  

c. velocity  

d. force 

Answer- force

Que- 3rd law of motion explains______________________?  

a. effect of force  

b. existence of a force  

c. existence of two forces  

d. existence of pair of forces in nature 

Answer- existence of pair of forces in nature

Que- The dimension of force is____________________?  

a. MLT-2  

b. ML2T-2  

c. ML2T2  

d. ML-2T-2 

Answer- MLT-2

Que- Which of the following pair has same direction always ?  

a. force, displacement  

b. force, velocity  

c. force, acceleration  

d. force, momentum 

Answer- force, acceleration

Que- The collision between two bodies be elastic if bodies are_________________?  

a. solid and soft  

b. soft and elastic  

c. solid and hard  

d. hard and elastic 

Answer- solid and hard

Que- When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?  

a. Centripetal force  

b. Gravitational force  

c. Their inertia  

d. Centrifugal force 

Answer- Centrifugal force

Que- What is the shape of velocity, time graph for constant acceleration ?  

a. straight inclined line.  

b. parabola  

c. inclined curve  

d. declined curve 

Answer- straight inclined line.

Que- Which shows the correct relation between time of flight T and maximum height H ?  

a. H=gT2/8  

b. H=8T2/g  

c. H=8g/T2  

d. H=gT2 

Answer- H=gT2/8

Que- Taking off rocket can be explained by __________________?  

a. 1st law of motion  

b. 2nd law of motion  

c. Law of conservation of momentum  

d. law of conservation of energy 

Answer- Law of conservation of momentum

Que- What is the angle of projection for which the range and maximum height become equal ?  

a. tan-1 ¼  

b. tan-1 4  

c. tan-1 ½  

d. tan-1 2 

Answer- tan-1 4

Que- Distance covered by a freely falling body in 2 seconds will be__________________?  

a. 4.9 m  

b. 19.6 m  

c. 39.2 m  

d. 44.1 m 

Answer- 19.6 m

Que- Flight of a rocket in the space is an example of______________________?  

a. second law of motion  

b. third law of motion  

c. first law of motion  

d. law of gravitation 

Answer- third law of motion

Que- At which angle the range of the projectile is maximum____________________?  

a. 45  

b. 60  

c. 30  

d. none 

Answer- 45

Que- Time rate of change of momentum is equal to____________________?  

a. force  

b. impulse  

c. velocity  

d. both A and C 

Answer- force

Que- Why Ballistic missile fails in some circumstances of precision ?  

a. due to their shape  

b. due to air resistance  

c. due to angle of projection  

d. all of these 

Answer- due to air resistance

Que- A body is moving with uniform velocity. Its______________________?  

a. speed changes  

b. acceleration changes  

c. direction of motion changes  

d. displacement from origin changes 

Answer- displacement from origin changes

Que- When velocity time graph is a straight line parallel to time axis then__________________?  

a. acceleration is const  

b. acceleration is variable  

c. acceleration is zero  

d. velocity is zero 

Answer- acceleration is zero

Que- Slope of velocity time graph is_____________________?  

a. acceleration  

b. distance  

c. force  

d. momentum 

Answer- acceleration

Que- Which law of motion is also called law of inertia ?  

a. 1st law  

b. 2nd law  

c. 3rd law  

d. all 1st, 2nd and 3rd laws 

Answer- 1st law

Que- Newtons laws do not hold good for particles_______________?  

a. at rest  

b. moving slowly  

c. move with high velocity  

d. move with velocity comparable to velocity of light 

Answer- move with velocity comparable to velocity of light

Que- 2nd law of motion gives the definition of________________?  

a. force  

b. acceleration  

c. velocity  

d. both force and acceleration 

Answer- acceleration

Que- Momentum depends upon__________________?  

a. force acts on the body  

b. mass of the body  

c. velocity of the body  

d. both mass and velocity of the body 

Answer- both mass and velocity of the body

Que- When a body moves in a straight line then its displacement coincides with__________________?  

a. distance  

b. force  

c. acceleration is zero  

d. both A and B 

Answer- distance

Que- Motorcycle safety helmet extends the time of collision hence decreasing the________________?  

a. chance of collision  

b. force acting  

c. velocity  

d. impulse 

Answer- impulse

Que- During long jump, athlete runs before taking the jump. By doing so he__________________?  

a. provide him a larger inertia  

b. decreases his inertia  

c. decreases his momentum  

d. increases his momentum 

Answer- increases his momentum

Que- A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?  

a. 14 m  

b. 20 m  

c. 5 m  

d. 25 m 

Answer- 14 m

Que- When collision between the bodies in a system is inelastic in nature then for system ____________________?  

a. momentum changes but K.E remain conserve  

b. K.E changes but momentum remain conserve  

c. both momentum and K.E changes  

d. both momentum and K.E remain conserve 

Answer- K.E changes but momentum remain conserve

Que- The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?  

a. -1  

b. 1  

c. 2  

d. -2 

Answer- 1

Que- Which of the following is not an example of projectile motion ?  

a. a gas filled ballon  

b. bullet fired from gun  

c. a football kicked  

d. a base ball shot 

Answer- a gas filled ballon

Que- The thrust on the rocket in the absence of gravitational force of attraction is__________________?  

a. Constant  

b. not constant  

c. constant if the rate of ejected gases is constant  

d. constant for short range rocket. 

Answer- Constant

Que- When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?  

a. 5m/s, 1m/s  

b. 3m/s, 3m/s  

c. 6m/s, 1m/s  

d. 4m/s, 2m/s 

Answer- 5m/s, 1m/s

Que- The distance covered by a body in time t starting from rest is__________________?  

a. at2/2  

b. Vt  

c. a2t/2  

d. at2 

Answer- at2/2

Que- The trajectory (or path) of a projectile is_________________?  

a. straight line  

b. parabola  

c. hyperbola  

d. circle 

Answer- parabola

Que- The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?  

a. 1 N  

b. 10 N  

c. 100 N  

d. none 

Answer- 1 N

Que- The range of the projectile at 30 deg and 60 deg are__________________?  

a. equal to 45 deg  

b. equal to 90 deg  

c. equal to each other  

d. none of the above 

Answer- equal to each other

Que- Waves transmit ________________ from one place to another?  

a. energy  

b. mass  

c. both  

d. none 

Answer- energy

Que- The distance between any two consecutive crests or troughs is called____________________?  

a. frequency  

b. period  

c. Wave length   

d. phase difference 

Answer- Wave length 

Que- In vibrating cord the points where the amplitude is maximum, are called ___________________?  

a. antinodes  

b. nodes  

c. troughs  

d. crests 

Answer- antinodes

Que- A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?  

a. always an node in formed  

b. always an antinode is formed  

c. neither node nor antinode is formed  

d. sometimes a node and sometimes an antinode is formed 

Answer- always an node in formed

Que- According to Newton sound travel in air under the conditions of_____________________?  

a. adiabatic  

b. isothermal  

c. isobaric   

d. isochoric 

Answer- isobaric 

Que- Velocity of sound in vacuum is ____________________?  

a. 332 ms-1  

b. 320 ms-1  

c. Zero  

d. 224 ms-1 

Answer- Zero

Que- The velocity of sound is greatest in___________________?  

a. Water  

b. air  

c. copper  

d. ammonia 

Answer- copper

Que- The velocity of sound in air would become double than its velocity at 0°C at temperature ?  

a. 313°C  

b. 586°C  

c. 819°C  

d. 1172°C 

Answer- 819°C

Que- Ultrasonic have__________________?  

a. frequency in the audible range  

b. frequency is greater than 20 kHz  

c. frequency lower than 20 Hz  

d. all of above 

Answer- frequency is greater than 20 kHz

Que- The number of beats produced per second is equal to____________________?  

a. the sum of the frequencies of two tuning forks  

b. the difference of the frequencies of two tuning forks  

c. the ratio of the frequencies of two tuning forks  

d. the frequency of either of the two tuning forks 

Answer- the difference of the frequencies of two tuning forks

Que- Silence zone takes place due to____________________?  

a. constructive interference  

b. destructive interference  

c. beats  

d. resonance 

Answer- destructive interference

Que- When the source of sound moves away form a stationary listener then ______________ occurs?  

a. an apparent increase in frequency  

b. an apparent decrease in frequency  

c. an apparent decrease in wavelength  

d. no apparent change in frequency 

Answer- an apparent decrease in frequency

Que- Which one is the correct relation for fundamental frequency of open and closed pipe ?  

a. fopen = 2 fclosed  

b. fclosed = 2fopen  

c. fopen = fclosed  

d. fopen = 1 / f closed 

Answer- fopen = 2 fclosed

Previous Post Next Post