Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

Que- Shock-absorbers are usually made of steel as it : 

a. Is not brittle 

b. Has lower elasticity 

c. Has higher elasticity 

d. Has no ductile property 

Answer- Has higher elasticity

Que- The dimensional formula ML–1T–2 corresponds to 

a. Modulus of elasticity 

b. Viscosity 

c. Moment of a force 

d. Thrust 

Answer- Modulus of elasticity

Que- Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known as: 

a. Mixing ratio 

b. Relative humidity 

c. Absolute humidity 

d. Specific humidity 

Answer- Absolute humidity

Que- The splitting of white light into its components is due to: 

a. Reflection 

b. Refraction 

c. Transmission 

d. Dispersion 

Answer- Dispersion

Que- Which of the following is used to split white light into different colours ? 

a. Glass slab 

b. Convex lens 

c. Concave lens 

d. Prism 

Answer- Prism

Que- What colour does blue and yellow make? 

a. Green 

b. Black 

c. Red 

d. White 

Answer- Green

Que- Which colour has the highest frequency? 

a. Violet 

b. Red 

c. Indigo 

d. Green 

Answer- Violet

Que- The splitting of different colours of light in a prism is : 

a. Reflection of light 

b. Disperson of light 

c. Diffraction of light 

d. Refraction of light 

Answer- Disperson of light

Que- Who measured the velocity of light first ? 

a. Galileo 

b. Newton 

c. Romer 

d. Einstein 

Answer- Romer

Que- Light houses are places with powerful lights to : 

a. Guide and resolve traffic jams in crowded metro-cities during nights 

b. Guide and help large crowds at religious gathering during nights 

c. Indicate to the incoming warships, the location of a harbour during night 

d. Guide and warn the ships coming from different directions in the ocean 

Answer- Guide and warn the ships coming from different directions in the ocean

Que- It is dangerous to observe Solar eclipse with naked eyes because 

a. Infrared radiations from sun burn our retina 

b. Ultraviolet radiations from Sun burn our retina 

c. All radiations from sun initiate chemical reactions in eyes 

d. Cosmic rays reach eyes more during the eclipse 

Answer- Ultraviolet radiations from Sun burn our retina

Que- Formation of shadows can be explained by  

a. Rectilinear propagation of light 

b. Reflection 

c. Refraction 

d. Total internal reflection 

Answer- Rectilinear propagation of light

Que- The locomotion of insects to the source of light is called : 

a. Phototropic 

b. Hydrotropic 

c. Phototactic 

d. Thermotactic 

Answer- Phototropic

Que- The wall of a dam is broader at the base 

a. Because streamlining is required 

b. To withstand pressure that increases with depth 

c. To withstand pressure that increases in a horizontal plane 

d. To withstand pressure that is increased with atmospheric pressure 

Answer- To withstand pressure that increases with depth

Que- It is easy to burst a gas-filled balloon with a needle than with a nail. It is because 

a. Nail is more longer than needle. 

b. Nail exerts more pressure than needle on the balloon. 

c. Needle exerts more pressure than nail on the balloon. 

d. Gas is reactive with the needle. 

Answer- Needle exerts more pressure than nail on the balloon.

Que- The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object. 

a. 2 m/s 

b. 2 m 

c. 2 m/sq.s 

d. 2 s 

Answer- 2 m/sq.s

Que- The spokes used in the wheel of a bicycle increase its 

a. Moment of inertia 

b. Velocity 

c. Acceleration 

d. Momentum 

Answer- Moment of inertia

Que- It is difficult to cook rice 

a. At the top of a mountain 

b. At the sea level 

c. Under a mine 

d. Same anywhere 

Answer- At the top of a mountain

Que- The sudden fall of atmospheric pressure indicates 

a. Fair weather 

b. Storm 

c. Rain 

d. Cold weather 

Answer- Storm

Que- Hydraulic brakes in automobile work on 

a. Poiseuille's principle 

b. Pascal's principle 

c. Archimedes' principle 

d. Bernoulli's principle 

Answer- Pascal's principle

Que- When the barometer reading dips suddenly, it is an indication of 

a. Hot weather 

b. Calm weather 

c. Storm 

d. Dry weather 

Answer- Storm

Que- A storm is predicted if atmospheric pressure 

a. Rises suddenly 

b. Rises gradually 

c. Falls suddenly 

d. Falls gradually 

Answer- Falls suddenly

Que- On which principle does the hydraulic lift works? 

a. Newton's law 

b. Pascal's law 

c. Archimedes's law 

d. Joule's law 

Answer- Pascal's law

Que- Which of the following group of elements are diamagnetic? 

a. Argon, copper, silver 

b. Hydrogen, argon, copper 

c. Oxygen, copper, silver 

d. Hydrogen, oxygen, Argon 

Answer- Argon, copper, silver

Que- At the Curie temperature, the ferromagnetic materials get converted into 

a. Diamagnetic materials 

b. Non-magnetic materials 

c. Paramagnetic materials 

d. None of the others 

Answer- Paramagnetic materials

Que- In the process of magnetisation of a bar 

a. The entire bulk of the bar gets magnetised 

b. Only the surface of the bar gets magnetised 

c. Only the ends of the bar get magnetised 

d. Only some parts of the outer layers of the bar get magnetised 

Answer- The entire bulk of the bar gets magnetised

Que- Magnetic domains normally occur in 

a. Copper 

b. Silver 

c. Iron 

d. All of the above 

Answer- Iron

Que- A small piece of a substance is weakly attracted by a strong magnetic field. The substance is 

a. Diamagnetic  

b. Ferromagnetic  

c. Paramagnetic  

d. Non-magnetic  

Answer- Paramagnetic 

Que- Which of the following is not a form of Energy? 

a. Heat 

b. Sound 

c. Motion 

d. Pressure 

Answer- Pressure

Que- Which of the following is the second largest source of global energy? 

a. Fossil fuel 

b. Nuclear Energy 

c. Renewable Energy 

d. None of these 

Answer- Renewable Energy

Que- Which of the following is a renewable source of energy 

a. Natural gas 

b. Coal 

c. Wind 

d. Oil 

Answer- Wind

Que- The energy that generates wind comes from what source? 

a. Anemometers 

b. Solar radiation 

c. Ocean currents 

d. None of the above 

Answer- Solar radiation

Que- Solar energy is due to 

a. Fusion reactions 

b. Fission reactions 

c. Combustion reactions 

d. Chemical reactions 

Answer- Fusion reactions

Que- The wavelength at which the peak of intensity of blackbody radiation occurs 

a. Increases with increase in temperature 

b. Decreases with increase in temperature 

c. Is the same at all temperatures 

d. Does not follow any pattern as temperature changes 

Answer- Decreases with increase in temperature

Que- Which of the following principle is used to produce ''low-temperatures' ? 

a. Super conductivity 

b. Joule-Kelvin effect 

c. Thermo-electric effect 

d. Adiabatic demagnetisation 

Answer- Adiabatic demagnetisation

Que- The first law of thermodynamics is simply the case of 

a. Charle's law 

b. Newton's law of cooling 

c. The law of heat exchange 

d. The law of conservation of energy 

Answer- The law of conservation of energy

Que- The commonly used coolant in refrigerators is 

a. Ammonia 

b. Nitrogen 

c. Freon 

d. Oxygen 

Answer- Freon

Que- Energy in reflected light : 

a. Does not depends on the angle of incidence 

b. Increases with the increase in angle 

c. Decreases with the increase in angle of incidence 

d. Becomes maximum for angle of incidence equal to 45° 

Answer- Increases with the increase in angle

Que- In total internal reflection, the light travel from 

a. Rarer to denser medium and it occurs with no loss of intensity 

b. Denser to rarer medium and it occurs with no loss of intensity 

c. Rarer to denser medium and it occurs with loss of intensity 

d. Denser to rarer medium and it occurs with loss of intensity 

Answer- Denser to rarer medium and it occurs with no loss of intensity

Que- Convex mirrors are used as a rear view mirror in motor cycles because 

a. It forms real image 

b. It forms erect (upright) image 

c. It forms smaller image as compared with object 

d. All of the above 

Answer- It forms smaller image as compared with object

Que- A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be : 

a. F 

b. (4/3)f 

c. (3/4)f 

d. (7/3)f 

Answer- F

Que- The phenomenon which causes mirage is 

a. Interference 

b. Diffraction 

c. Polarisation 

d. Total internal reflection 

Answer- Total internal reflection

Que- Rear view mirror of car is convex or concave? 

a. Convex 

b. Concave 

c. Both A & B 

d. Can't be determined 

Answer- Convex

Que- The reverse effect of X–ray emission is 

a. Raman effect 

b. Compton effect 

c. Zeeman effect 

d. Photoelectric 

Answer- Photoelectric

Que- The term photon refers to 

a. Light ray 

b. Sub atomic particle 

c. Radiation 

d. None of the above 

Answer- Sub atomic particle

Que- In a conductor 

a. There is no conduction band 

b. The forbidden energy gap is very wide 

c. The forbidden energy gap is very narrow 

d. The valence band and the conduction band overlap each other 

Answer- The valence band and the conduction band overlap each other

Que- The unit of intensity of electric field is 

a. N/c  

b. N/m  

c. J/c  

d. Volt  

Answer- N/c 

Que- . . . . . . . . . exerts a force on anything that has an electric charge. 

a. Electric field 

b. Electrostatic force 

c. Inductive field 

d. All of the above 

Answer- Electric field

Que- The phenomenon of change in direction of light when it passes from one medium to another is called 

a. Propagation 

b. Reflection 

c. Refraction 

d. Dispersion 

Answer- Refraction

Que- The refractive index of a transparent medium is maximum for 

a. Red light  

b. Violet light  

c. Yellow light  

d. Green light  

Answer- Violet light 

Que- What type of lens is a magnifying glass? 

a. Diverging 

b. Spherical 

c. Converging 

d. Achromatic 

Answer- Converging

Que- Which of the following is not caused by atmospheric refraction of light ? 

a. Sun appearing red at sunset 

b. Twinkling of stars at night 

c. Sun appearing higher in the sky than it actually is 

d. Sun becoming visible two or three minutes before actual sunrise 

Answer- Sun appearing higher in the sky than it actually is

Que- Why does water tank appear shallower when viewed from the top? 

a. Due to reflection 

b. Due to refraction 

c. Due to diffraction 

d. Due to total internal reflection 

Answer- Due to refraction

Que- Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum? 

a. Barkla's experiment on scattering of X-rays  

b. Lamb-Rutherford experiment  

c. Geiger and Marsdens experiment on scattering of alpha particles  

d. Bunsen and Kirchhoff's experiment  

Answer- Bunsen and Kirchhoff's experiment 

Que- Erg cross Sec is the unit of 

a. Angular momentum 

b. Linear Momentum 

c. Planck's constant 

d. Energy 

Answer- Planck's constant

Que- A dynamometer wattmeter can be used for 

a. Only Direct Current 

b. Only Active Current 

c. Both A & B 

d. None of the above 

Answer- Both A & B

Que- The device which converts AC to DC is 

a. Oscillator 

b. Amplifier 

c. Rectifier 

d. None of these 

Answer- Rectifier

Que- After removing two electrons from helium atom it become? 

a. UV rays 

b. Alpha particle 

c. Gama particle 

d. X rays 

Answer- Alpha particle

Que- A nuclear reactor is said to have become 'critical' when  

a. It stops due to malfunctioning 

b. It starts emitting dangerous radioactive radiations 

c. It is shut down to avoid explosion 

d. It is ready to produce controlled energy 

Answer- It is ready to produce controlled energy

Que- Nuclear reactors used to produce electricity are based on 

a. Nuclear fission 

b. Nuclear fusion 

c. Cold fusion 

d. Superconductivity 

Answer- Nuclear fission

Que- The energy obtained from atoms is known as ________  

a. Solar energy 

b. Heat energy 

c. Nuclear energy 

d. Chemical energy 

Answer- Nuclear energy

Que- When heated from 0 to 100oC volume of a given mass of water will : 

a. Increase gradually 

b. Decrease gradually 

c. Increase and then will decrease 

d. Decrease and then will increase 

Answer- Decrease and then will increase

Que- When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of 

a. Surface tension 

b. Capillarity 

c. Viscosity 

d. Diffusion 

Answer- Diffusion

Que- Which of the following laws validates the statement that matter can neither be created nor destroyed ? 

a. Law of conservation of energy 

b. Le Chatelier's Principle 

c. Law of conservation of mass 

d. Law of osmosis 

Answer- Law of conservation of mass

Que- The boiling point of liquids vary as 

a. Pressure varies 

b. Temperature varies 

c. Volume varies 

d. Density varies 

Answer- Pressure varies

Que- The freezing point of fresh water is ________ . 

a. 4°C 

b. 3°C 

c. 5°C 

d. 0°C 

Answer- 0°C

Que- Kirchoff's Voltage Law is known as 

a. Conservation of Charge  

b. Conservation Energy  

c. Both  

d. None of these  

Answer- Conservation Energy 

Que- Super conductors are substances that 

a. Offer minimum resistance to flow of electric current 

b. Conduct electricity at low temperature 

c. Conduct electricity at high temperature 

d. Offer high resistance to the flow of electric current 

Answer- Offer minimum resistance to flow of electric current

Que- A galvanometer can be converted to a voltmeter by connecting 

a. A high resistance in parallel 

b. A high resistance in series 

c. A low resistance in series 

d. A low resistance in parallel 

Answer- A high resistance in series

Que- Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. 

a. Superconductors 

b. Semi conductors 

c. Dielectrics 

d. Perfect conductors 

Answer- Superconductors

Que- Speed of sound in air is unaffected by change in  

a. Pressure 

b. Humidity 

c. Temperature 

d. Volume 

Answer- Pressure

Que- RADAR is used for 

a. Detecting and locating the position of objects such as Aeroplanes 

b. Locating submerged submarines 

c. Locating geostationary satellites 

d. Receiving a signals in a radio receiver 

Answer- Detecting and locating the position of objects such as Aeroplanes

Que- What is the minimum distance (in metres) required to hear an echo? 

a. 10 

b. 13 

c. 17 

d. 21 

Answer- 17

Que- Sound travels fastest in 

a. Vacuum 

b. Air 

c. Glass 

d. Water 

Answer- Glass

Que- Which among the following determines the pitch of a sound? 

a. Amplitude 

b. Frequency 

c. Loudness 

d. Wavelength 

Answer- Frequency

Que- Heat from the Sun reaches the Earth by 

a. Reflection 

b. Conduction 

c. Radiation 

d. Convection 

Answer- Radiation

Que- Heat transfer by conduction occurs when molecules 

a. Collide 

b. Combine 

c. Heated 

d. None of the above 

Answer- Collide

Que- A body absorbs heat most if it is 

a. Black and rough 

b. Black and smooth 

c. White and rough 

d. White and smooth 

Answer- Black and rough

Que- A black body can absorb radiations of : 

a. Lower wavelengths only 

b. Intermediate wavelengths only 

c. Higher wavelengths only 

d. All wavelengths 

Answer- All wavelengths

Que- The cover of a solar cooker is made of glass because  

a. It absorbs sun's rays 

b. It reflects sun's rays 

c. It retains the heat inside by the green house effect 

d. It rediates heat better than metals 

Answer- It retains the heat inside by the green house effect

Que- For which of the following substances, the resistance decreases with increase in temperature? 

a. Pure silicon 

b. Copper 

c. Nichrome 

d. Platinum 

Answer- Nichrome

Que- The S.I. unit of electric charge is : 

a. Ampere 

b. Coulomb 

c. E.s.u 

d. Kelvin 

Answer- Coulomb

Que- Indicate the false statement about the resistance of a wire 

a. It depends on material of wire 

b. It is directly proportional to the length of wire 

c. It is directly proportional to the area of cross-section of wire 

d. Resistance of metallic wire increases with increase in temperature 

Answer- It is directly proportional to the area of cross-section of wire

Que- The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: 

a. Avogadro's law 

b. Rault's law 

c. Ohms law 

d. Faraday's law 

Answer- Ohms law

Que- What is the SI unit of electric current? 

a. Newton 

b. Joule 

c. Ampere 

d. Watt 

Answer- Ampere

Que- As we go from Equator to North pole the value of ''g', the acceleration due to gravity 

a. Remains the same 

b. Decreases 

c. Increases 

d. None of the above 

Answer- Increases

Que- Speed in a given direction is called 

a. Velocity 

b. Torque 

c. Acceleration 

d. Displacement 

Answer- Velocity

Que- For a body moving with uniform acceleration its final velocity equals ________  

a. Average velocity - initial velocity 

b. 2 x average velocity - initial velocity 

c. 2 x average velocity + initial velocity 

d. Average velocity + initial velocity 

Answer- 2 x average velocity - initial velocity

Que- A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/s2) is: 

a. 3 

b. 5 

c. 6 

d. 7 

Answer- 3

Que- In ________ motion of a body its velocity varies with time. 

a. Uniform 

b. Linear 

c. Equilibrium 

d. Non-uniform 

Answer- Non-uniform

Que- Which one of the following is the correct sequence of passage of light in a compound microscope? 

a. Condenser -Objective lens -Eye -piece -Body tube 

b. Objective lens -Condenser -Body tube -Eye piece 

c. Condenser -Objective lens -Body tube -Eyepiece 

d. Eyepiece -Objective lens -Body tube -Mirror 

Answer- Condenser -Objective lens -Body tube -Eyepiece

Que- In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is  

a. Decreased by 2% 

b. Decreased by 4% 

c. Increased by 2% 

d. Increased by 4% 

Answer- Decreased by 4%

Que- A simple microscope consists of : 

a. A short focus convex lens 

b. A long focus convex lens 

c. A short focus concave lens 

d. A long focus concave lens 

Answer- A short focus convex lens

Que- Person who is colourblind cannot distinguish between 

a. Black and yellow 

b. Red and green 

c. Yellow and white 

d. Green and blue 

Answer- Red and green

Que- Fiber optics cable used in communication, works on the principle of 

a. Regular reflection of light 

b. Diffuse reflection of light 

c. Refraction of light 

d. Total internal reflection of light 

Answer- Total internal reflection of light

Que- Where do the electrical charges reside in a charged conductor? 

a. At the core 

b. Throughout the body 

c. Depended upon the nature of the body 

d. Outer surface of the body 

Answer- Outer surface of the body

Que- The strength of an electromagnet can be increased by 

a. Increasing the length of the coiled wire 

b. Increasing current supply 

c. Increasing the number of turns 

d. All of the above 

Answer- All of the above

Que- The unit of Planck's constant is 

a. Js 

b. Js–2 

c. J/s 

d. Js2 

Answer- Js

Que- When a vehicle passes, TV reception gets distorted. This is because 

a. Metal reflects radiowaves 

b. Spark plug creates electromagnetic disturbances 

c. Vehicle pollution affects the performance of the TV components 

d. Modern vehicles use electroignition system 

Answer- Spark plug creates electromagnetic disturbances

Que- The unit of magnetic permeability is 

a. Henry/meter  

b. Henry  

c. Weber  

d. Weber/meter  

Answer- Henry/meter 


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