# Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Que- Moment of inertia is:

a. Vector

b. Scalar

c. Phasor

d. Tensor

Que- Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?

a. Rainbow

b. Earthshine

c. Halo

d. Mirage

Que- Inside an aeroplane, flying at a high altitude,

a. the pressure is the same as that outside.

b. normal atmospheric pressure is maintained by the use of air pumps.

c. the pressure inside is less than the pressure outside.

d. normal humidity and partial vacuum are maintained.

Answer- normal atmospheric pressure is maintained by the use of air pumps.

Que- Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

a. Water, iron and air

b. Iron, air and water

c. Air, water and iron

d. Iron, water and air

Que- One thousand microns is equal to

a. 10-3m

b. 10-6m

c. 10-9m

d. 10-12m

Que- The motion of a freely falling body is an example of ________ accelerated motion.

a. Non-uniformly

b. Uniformly

c. Uniquely

d. Specially

Que- A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.

a. 4

b. 72

c. 36

d. 8

Que- Formula for distance is

a. Speed x time

b. Time / speed

c. Speed x acceleration

d. Velocity / speed

Que- Which among the following is false about displacement?

a. It can be positive, negative or zero

b. Displacement is never greater than Distance

c. Its SI unit is meter

d. It is always positive

Que- The motion of the wheels of a bullock-cart while moving on the road is an example of

a. Oscillatory and rotatory motion

b. Oscillatory and translatory motion

c. Translatory and rotatory motion

d. Translatory motion only

Que- The waveform of a certain signal can be studied by

a. Spectrometer

b. Cathode ray oscilloscope

c. P – n junction diode

d. Sonometer

Que- The GPS device in an automobile uses which communication channel?

a. Satellite

b. Microwave

d. Infrared

Que- In a optical fibre cable, the signal is propagated along the

a. Inner Core

Que- The audio signals of TV are

a. Amplitude modulated

b. Frequency modulated

c. Unmodulated

d. Velocity modulated

Que- In radio-communication, the signals emitted by transmitting antenna are reflected on

a. Stratosphere

b. Ozonosphere

c. Ionosphere

d. Troposphere

Que- Which one of the following wavelengths of light is most effective in photosynthesis ?

a. Blue

b. Green

c. Orange

d. Yellow

Que- The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is

a. Diffraction

b. Interference

c. Dispersion

d. Reflection

Que- An electron microscope gives higher magnification than an optical microscope, because :

a. It uses more powerful lenses

b. The velocity of electron is smaller than that of visible light

c. The electrons have more energy than the light particles

d. The wavelength of electrons is smaller as compared to the wavelength of visible light

Answer- The wavelength of electrons is smaller as compared to the wavelength of visible light

Que- The magnifying power of an astronomical telescope can be decreased by

a. Decreasing the focal length of the eyepiece

b. Increasing the focal length of the eyepiece

c. Increasing the focal length of the objective

d. None of these

Answer- Increasing the focal length of the eyepiece

Que- The light rays used for eliminating bacteria is

a. X-rays

b. Infrared rays

Que- Lamberts law is related to

a. Reflection

b. Refraction

c. Interference

d. Illumination

Que- The wave of theory of light is based on

a. The laws of reflection

b. The laws of refraction

c. The inverse square law

d. Huyghens' principle

Que- When a strong beam of light is passed through a colloidal solution, the light will

a. Be scattered

b. Pass unchanged

c. Be absorbed

d. Be reflected

Que- Which of these waves can be polarized ?

a. Sound waves in air

b. Longitudinal waves on a string

c. Transverse waves on a string

d. Light waves

Que- The scientist who first sent electromagnetic waves to distant places is

a. James Clerk Maxwell

b. Heinrich Hertz

c. Thomas Alva Edison

d. John Logie Baird

Que- Proton carry a

a. Positive Charge

b. Negative Charge

c. Variable Charge

d. Neutral Charge

Que- Which of the following is preferred for accelerating electrons?

a. Betatron

b. Cyclotron

c. Synchrotron

d. Van de Graft Generator

Que- Why does'nt the hydrogen atom emit X-rays?

a. It is very small in size

b. It has only one electron

c. Its energy levels are very close to each other

d. It is highly electropositive

Answer- Its energy levels are very close to each other

Que- What is a neuron ?

a. Basic unit of energy

c. The anti-particle of neutron

d. Basic unit of nervous system

Answer- Basic unit of nervous system

Que- Which electromagnetic radiation is used for satellite communication ?

a. Ultraviolet

b. Infrared

d. Millimeter wave

Que- During uniform motion of an object along a straight line, its ________ remains constant with time.

a. Acceleration

b. Deceleration

c. Force

d. Velocity

Que- A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

a. 18 m/s

b. 25 m/s

c. 30 m/s

d. 36 m/s

Que- Rain drops fall from great height. Which among the following statements is true regarding it?

a. They fall with that ultimate velocity, which are different for different droplets

b. They fall with same ultimate velocity

c. Their velocity increases and they fall with different velocity on the earth

d. Their velocity increases and they fall with same velocity on the earth

Answer- They fall with that ultimate velocity, which are different for different droplets

Que- A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?

a. Circle

b. Parabolic

c. Great circle

d. Hyper–parabolic

Que- A particle is thrown vertically upward. When it reaches the highest point, it has

a. A downward acceleration

b. An upward acceleration

c. A downward velocity

d. A horizontal velocity

Que- Which phenomenon is responsible for the echo of sound wave?

a. Reflection

b. Refraction

c. Interference

d. Polarisation

Que- Loudness of sound depends on

a. Frequency

b. Wavelength

c. Amplitude

d. Pitch

Que- Which one of the following animals can hear ultrasonic sound ?

a. Rat

b. Squirrel

c. Cat

d. Bat

Que- The instrument which uses sound waves to measure the depth of oceans is

b. Sonar

c. Altimeter

d. Venturimeter

Que- Megahertz is a measurement of

a. Frequency

b. Speed

c. Wavelength

d. Capacity

Que- Lens is made up of which glass

a. Ordinary glass

b. Pyrex glass

c. Flint glass

d. Cobalt glass

Que- The final image in a simple microscope is

a. Real, diminished and inverted

b. Real, magnified and erect

c. Virtual, magnified and erect

d. Virtual, diminished and erect

Que- Which microscope is often used to view metal surfaces?

a. Optical microscopes

b. Scanning tunneling microscopes

c. Electron microscopes

d. None of the above

Que- Which of the following cannot be used for making lenses?

a. Plastic

b. Soil

c. Glass

d. Water

Que- The illuminating powers of two sources are compared by

a. A spectrometer

b. A photometer

c. A polarimeter

d. A fluxmeter

Que- The velocity of sound is more in

a. Water

b. Air

c. Steel

d. Wood

Que- Echo is heard due to

a. Refraction

b. Scattering

c. Reflection

d. Interference

Que- A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

a. The same in both cases in all respects

b. Of higher intensity when train arrives

c. Of higher pitch when train arrives

d. Of higher pitch when train departs

Answer- Of higher pitch when train arrives

Que- The sound produced by a bat is–

a. Audible

b. Subsonic

c. Infrasonic

d. Ultrasonic

Que- Sound is heard over longer distances on rainy days because

a. Sound travels slowly in moist air

b. Sound travels faster in moist air

c. Moist air does not absorb sound

d. Moist air absorbs sound

Answer- Sound travels faster in moist air

Que- Energy per unit volume is dimensionally equal to

a. Pressure

b. Force

c. Density

d. Work

Que- To open a door easily, the handle should be fixed

a. Near the hinges

b. Away from mid-point opposite to hinges

c. In the middle

d. None of these

Que- Water boils at a lower temperature on the hills because

a. It is cold on the hills

b. There is less carbon dioxide on the hills

c. There is a decrease in air pressure on the hills

d. There is less oxygen

Answer- There is a decrease in air pressure on the hills

Que- The force exerted by a magnet is an example of ________

a. Non-contact force

b. Muscular force

c. Contact force

d. Electrostatic force

Que- A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ________ .

a. Gravitational force between train and man

b. Illusion of the man

c. The centripetal force

d. Pressure difference due to fast moving air in between

Answer- Pressure difference due to fast moving air in between

Que- What is the range of Strong Nuclear force?

a. Infinite

b. Very short Subnuclear size

c. Very short Nuclear size

d. None

Que- Name the process of production of energy in the Sun

a. Nuclear fission

c. Nuclear fusion

d. Ionization

Que- Which type of reaction produces the most harmful radiation ?

a. Fusion reaction

b. Fission reaction

c. Chemical reaction

d. Photo-Chemical reaction

Que- Energy is continuously created in the sun due to:

a. Nuclear fusion

b. Nuclear fission

Que- The mass defect is the result of what action occurring?

a. Mass being converted to energy when protons and neutrons bind together in a nucleus

b. Protons and electrons being attracted to each other

c. Energy being converted into moles of atoms when neutrons break apart protons

d. Mass being converted to energy when protons and neutrons break apart in a nucleus

Answer- Mass being converted to energy when protons and neutrons bind together in a nucleus

Que- Fuse wire is made of an alloy of

b. Tin and Copper

d. Copper and Silver

Que- In the electrical circuit of a house, the fuse acts as

b. A thermopile

c. A safety device

d. A step down device

Que- The nature of fuse wire is

a. High resistance and low melting point.

b. High resistance and high melting point.

c. Low resistance and high melting point.

d. Low resistance and low melting point.

Answer- High resistance and low melting point.

Que- Which of these is exhibiting kinetic energy?

a. An archer with a flexed bow

b. A person sitting on a couch while watching TV

c. A space station orbiting Earth

d. All of the above

Answer- A space station orbiting Earth

Que- An object having the capability to do work is said to possess

a. Inertia

b. Force

c. Pressure

d. Energy

Que- In a railway track, two rails are joined end to end with a gap in between them because

a. Steel can be saved

b. Accidents due to contraction in winter can be avoided

c. Air-gaps are necessary for bearing the weight of running train

d. Accidents due to expansion in summer can be avoided

Answer- Accidents due to expansion in summer can be avoided

Que- Air coolers are more suitable for

a. Hot and humid climate

b. Hot and dry climate

c. Cool and humid climate

d. Cool and dry climate

Que- We feel cool when we sit near the fan, this is because

a. Fan gives cool air.

b. Fan cools surrounding air.

c. Air vapourises the sweat on our body.

d. We feel cool when air touches the body.

Answer- Air vapourises the sweat on our body.

Que- When hot-water is sprinkled on a hotter glass tumbler, it breaks because

a. Glass suddenly expands

b. Glass suddenly contracts

c. Water evaporates

d. Glass reacts chemically with water

Que- A gap is left between two rails of a railway track to accommodate...... of the metal.

a. Areal expansion

b. Volume expansion

c. Linear expansion

d. Apparent expansion

Que- If the distance between Sun and Earth becomes double, then the gravitational force on Earth will be

a. Double

b. Same

c. Half

d. One Fourth

Que- The large collection of stars, dust and gas held together by gravitational attraction between components is known as

a. Cluster

b. Atmosphere

c. Galaxy

d. Sun Family

Que- A person can jump higher on the moon's surface than on the earth because :

a. The moon's surface is rough

b. The acceleration due to gravity in moon is smaller than that on the earth.

c. The moon is cooler than earth

d. The moon has no atmosphere

Answer- The acceleration due to gravity in moon is smaller than that on the earth.

Que- The velocity required to place a vehicle in orbit around the moon is ________ that required to place it in orbit round the earth.

a. Less than

b. Greater than

c. Equal to

d. Greater than or equal to

Que- Which measurement depends on gravitational force?

a. Mass

b. Weight

c. Height

d. All of the above

Que- Thermocouple consists of

a. Two dissimilar metals

b. Two similar metals

c. Metal and a semiconductor

d. Metal and an insulator

Que- Water has maximum density at

a. 100°C

b. 0°C

c. 4°C

d. 273°C

Que- When water freezes its density

a. Decreases

b. Becomes Zero

c. Remains constant

d. Increases

Que- Which of the following are methods of heat transfer?

a. Convection

b. Evaporation

c. Revolution

d. Thermal Expansion

Que- Heat energy is transferred by conduction whenever molecules

a. Collide each other

b. Means of photons

c. Particles replaces there places

d. All of the above

Que- A cycle tyre bursts suddenly. This represents an :

a. Isothermal process

c. Isochoric process

d. Isoboric process

Que- Which has the lowest albedo?

a. Dark surfaces

b. Light surfaces

c. Both A & B

d. None of the above

Que- Which one of the following is a non-dimensional quantity?

a. Gas constant

b. Strain

c. Co-efficient of viscocity

d. Plank's constant

Que- The dimension of Planck constant equals to that of

a. Energy

b. Momentum

c. Angular momentum

d. Power

Que- The recoiling of gun is an example of which of the following?

a. Law of Conservation of Angular Momentum

b. Law of Conservation of Linear Momentum

c. Conversion of Kinetic Energy to Potential Energy

d. Law of Conservation of Energy

Answer- Law of Conservation of Linear Momentum

Que- The hydraulic brakes used in automobiles is a direct application of :

a. Archimedes' principle

b. Toricellian law

c. Bernoulli's theorem

d. Pascal's law

Que- If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is

a. Height of the liquid column

b. Surface area of the bottom of the vessel

c. Density of the liquid

d. Acceleration due to gravity at the bottom of the vessel

Answer- Surface area of the bottom of the vessel

Que- For which of the following game, players must have the knowledge of Pascal's law?

a. Climbing

b. Paragliding

c. Rafting

d. Scuba diving

Que- Air pressure is usually highest when the air is

a. Warm and moist

b. Cool and dry

c. Warm and dry

d. Cool and moist

Que- Which process allows water to enter the atmosphere?

a. Transpiration

b. Respiration

c. Condensation

d. Evaporation

Que- Solar cells work on the principle of

a. Photovoltaic effect

b. Photoelectric effect

c. Photoconductive effect

d. Photosynthesis

Que- Wind and solar energy are examples of

a. Non renewable

b. Renewable

c. Unsustainable

d. Limited

Que- Electrostatic precipitator is used to control the pollution of

a. Air

b. Water

c. Noise

d. Thermal

Que- Hydro-electric power is a:

a. non-renewable natural resource

b. A mixture of renewable and non-renewable natural resource

c. Neither renewable nor non renewable resource

d. Renewable natural resource

Que- Energy that is produced commercially from coal is called

a. Light energy

b. Kinetic energy

c. Thermal energy

d. Potential energy

Que- Velocitation is the tendency to

a. Be traveling at a speed that is faster than perceived

b. Be traveling at a speed that is slower than perceived

c. Both A & B

d. None of the above

Answer- Be traveling at a speed that is faster than perceived

Que- If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with

a. Constant speed

b. Constant velocity

c. Constant acceleration

d. Varying acceleration

Que- Which one of the following is applicable to collision-coalescence process of precipitation?

a. Clouds which do not extend beyond the freezing level

b. Clouds which extend beyond the freezing level

c. All types of clouds

d. Cirrocumulus cloud

Answer- Clouds which do not extend beyond the freezing level

Que- The law of conservation of energy states that

a. Energy can neither be created nor destroyed

b. Energy can either be created nor destroyed

c. Energy can neither be created or destroyed

d. Energy can either be created or destroyed

Answer- Energy can neither be created nor destroyed

Que- A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle

a. At the lower elevation than the bird

b. At a higher elevation than the bird

c. In the same direction as the bird

d. Vertically upwards

Answer- At a higher elevation than the bird