# Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Que- Electricity is transmitted over long distances

a. It is fast

b. There is less wastage of energy

c. It is safer

d. It is cheaper

Answer- There is less wastage of energy

Que- We always see the same face of the moon, because

a. It is smaller than the earth

b. It revolves on its axis in adirection opposite to that ofthe earth

c. It takes equal time for revolution around the earth and rotation on its own axis

d. It rotates at the same speed as the earth around the sun

Answer- It takes equal time for revolution around the earth and rotation on its own axis

Que- The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by

a. Galileo

b. Martin Luther

c. Johannes Kepler

d. Copernicus

Que- Stars are held together by

a. Gravitational forces

b. Electrical forces

c. Ionic forces

d. Magnetic forces

Que- The number of waves per second in a sound is called ________ of that sound.

a. Velocity

b. Frequency

c. Displacement

d. Acceleration

Que- Sound waves do not show the phenomenon of

a. Refraction

b. Interference

c. Diffraction

d. Polarisation

Que- Speed of sound is maximum in which among the following?

a. Gases

b. Vaccum

c. Liquids

d. Solids

Que- The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because

a. The ringing is not loud enough

b. The glass of the bell jar absorbs the sound waves

c. The bell jar is too small

d. There is no air or any other gas in the bell jar

Answer- There is no air or any other gas in the bell jar

Que- What is the full form of "RADAR" ?

b. Region Device and Ranging

Que- A cyclist leans inwards when he is negotiating a curve so that

a. He may increase his speed

b. His weight may be reduced

c. Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.

d. No frictional force may be produced between the wheels and the axle

Answer- Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.

Que- Knot is a measure of

a. The speed of ship

b. The curvature of spherical objects

d. Intensity of earthquake shock

Que- A pilot has to release the bomb to hit a target

a. Right above the target

b. Beyond the target

c. Before the target

d. None of these

Que- What is the other name of Galileo's law of falling bodies?

a. Law of motion

b. Newton's first law

c. Newton's second law

d. Newton's third law

Que- A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

a. Depends on their masses

b. Sphere

c. Disk

d. Both reach at the same time

Que- The washing machine works on the principle of

a. Dialysis

b. Diffusion

c. Reverse osmosis

d. Centrifugation

Que- When an unbalanced force acts on an object

a. Causes change in motion of the object

b. The speed & direction of the object will change

c. Causes the object to move

d. All of the above

Que- What type of force acts on a car moving around a curve?

a. Centrifugal force

b. Cohesive force

c. Centripetal force

d. Gravitational force

Que- Damp clothes are dried in spin dryers by the action of

a. Centripetal forces

b. Centrifugal forces

c. Central forces

d. Non central forces

Que- The unit of noise pollution (level) is :

a. Decibel

b. Decimal

c. Ppm

d. None of these

Que- The speed of sound travel fastest through

a. Liquid

b. Solid

c. Gas

d. None of the above

Que- Compressions and Rarefactions are characteristic of

a. Longitudinal waves

b. Transverse waves

c. Both A & B

d. Neither of A & B

Que- Hertz is a unit for measuring

a. Intensity of waves

b. Frequency of waves

c. Wavelength

d. Clarity of waves

Que- What is the direction of torque?

a. Perpendicular to the direction of applied force

b. Same as the direction of applied force

c. Opposite to the direction of applied force

Answer- Perpendicular to the direction of applied force

Que- The motion of a body around a circular path is an example of

a. Uniform velocity, variable acceleration

b. Uniform speed, uniform velocity

c. Uniform speed, variable velocity

d. Uniform speed, variable acceleration

Que- What should a person on a freely rotating turn table do to decrease his (angular) speed ?

a. Bring his hands together

b. Raise his hands up

d. Sit down with raised hands

Que- A sphere rolls down on two inclined planes of different angles but same height, it does so

a. In the same time

b. With the same speed

c. In the same time with the same speed

d. In the same time with the same kinetic energy

Que- If a body moves with a constant speed in a circle

a. No work is done on it

b. No force acts on it

c. No acceleration is produced in it

d. Its velocity remains constant

Que- Which of the following is arranged in order of decreasing conductivity?

a. Copper, Aluminium, Steel, Silver

b. Aluminium, Silver, Copper, Steel

c. Copper, Silver, Aluminium, Steel

d. Silver, Copper, Aluminium, Steel

Que- Every hot object emits ________

a. X–rays

b. Visible light

c. Infrared rays

d. Ultraviolet rays

Que- Which metal is the best conductor of heat?

a. Silver

b. Gold

c. Copper

d. All of the above

Que- When hot liquid is poured into a thick glass tumbler, it cracks because glass :

a. Is a bad conductor of heat so only inner surface expands

b. Has high temperature coefficient of expansion

c. Has a very low specific heat

d. Has low temperature coefficient of expansion

Answer- Is a bad conductor of heat so only inner surface expands

Que- Mud houses are cooler in summers and warmer in winters as compared to brick houses because

a. Mud is a good conductor

b. Mud is a bad conductor

c. Mud is a poor insulator

d. Evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Que- Which of the following is an example of simple harmonic motion?

a. Earth spinning on its axis

b. Simple pendulum motion

c. Ball bouncing on floor

d. Motion of a ceiling fan

Que- Boyle's law is a relationship between

a. Pressure and volume

b. Volume and temperature

c. Volume and density

d. Pressure and temperature

Que- Which of the metals has the maximum thermal conductivity?

a. Iron

b. Aluminium

c. Silver

d. Copper

Que- Which law relates to the ideal gas law?

a. P1T1 = P2T2

b. P1/V1 = P2/V2

c. P1V1 = P2V2

d. T1/V1 = T2/V2

Que- A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will

a. Increase

b. Decrease

c. Remain unaffected

d. Have its shape changed

Que- If a band is played on the moon the sound will

a. Reverberate

b. Be heard by us faintly

c. Be heard upto 10km from it

d. Not be heard at any distance at all from it

Answer- Not be heard at any distance at all from it

Que- The shape of our milky way galaxy is

a. Circular

b. Elliptical

c. Spiral

d. None of the above

Que- The colours of stars depend on their

a. Temperature

b. Distance

d. Atmospheric pressure

Que- The substance which conducts current in the solid state is

a. Diamond

b. Graphite

c. Iodine

d. Sodium chloride

Que- Electric current is measured by which instrument?

a. Voltmeter

b. Ammeter

c. Barometer

d. Sinometer

Que- The rotational effect of a force on a body about an axis of rotation is described in terms of

a. Centre of gravity

b. Centripetal force

c. Centrifugal force

d. Moment of force

Que- At hill stations, the boiling point of water will be

a. Same as at sea level

b. Less than that at sea level

c. More than that at sea level

d. Equal to the melting point of ice

Answer- Less than that at sea level

Que- Instrument used to measure the force and velocity of the wind is

a. Ammeter

b. Anemometer

c. Altimeter

d. Audiometer

Que- When pressure is increased the melting point of ice

a. Increases

b. Does not change

c. Decreases

d. Depends on the impurities in the ice

Que- The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall

a. Depends on the thickness of the wall

b. Increases with height of the wall

c. Increases with depth of the wall

d. Depends on the area of the wall

Answer- Increases with depth of the wall

Que- Sending a frame to a group of stations is known as

a. Single casting

c. Multicasting

d. Casting

a. Amplitude Movement

b. Anywhere Movement

c. Amplitude Matching

d. Amplitude Modulation

Que- Radio waves sent out by a radio stations are reflected by

a. Troposphere

b. Stratosphere

c. Mesosphere

d. Ionosphere

Que- Bandwidth is the

a. A measure of the width of a range of frequencies

b. The rate of data transfer

c. Both a & b

d. None of the above

Que- Negative feedback in amplifiers

a. Increases bandwidth and decreases noise

b. Decreases bandwidth and decreases noise

c. Increases bandwidth and increases noise

d. Decreases bandwidth and increases noise

Answer- Increases bandwidth and decreases noise

Que- A concave lens always forms an image which is

a. Real and erect

b. Virtual and erect

c. Real and inverted

d. Virtual and inverted

Que- Which one of the following determines the sharpness of image in a camera ?

a. The aperture

b. The exposure time

c. The focal length of the lens

d. Size of the camera

Que- Dioptre is the unit of

a. Power of a lens

b. Focal length of a lens

c. Light intensity

d. Sound intensity

Que- The part of the eye having the largest refractive index is :

a. Cornea

b. Aqueous humor

c. Lens

d. Vitreous humor

Que- Vehicles use ________ to see the objects coming from behind.

a. Concave lens

b. Convex lens

c. Convex mirror

d. Concave mirror

Que- Sound following a flash of lightning is called

a. Stoning

b. Bolting

c. Thunder

d. Cloud clash

Que- Acceptable noise level for human ear

a. > 85 db

b. = 85 db

c. < 85 db

d. None of the above

Que- Decibel is a term connected with :

a. Air

b. Water

c. Sound

d. Soil

Que- Decibel is the unit used for

a. Speed of light

b. Intensity of heat

c. Intensity of sound

Que- The speed of sound in air depends on

a. Frequency

b. Temperature

c. Wavelength

d. None of the Above

Que- A tank filled partially with a liquid is subjected to a uniform horizontal acceleration. Which of the following is true for the surface of liquid in the tank?

a. The liquid surface falls down on the direction of motion and rises up on the back side of the tank

b. The liquid surface falls down only at the center of the tank

c. The surface of the liquid remains horizontal

d. None

Answer- The liquid surface falls down on the direction of motion and rises up on the back side of the tank

Que- The lift of an aeroplane is caused by

a. Law of gravitation

b. Theorem of continuity

c. Pascel's law

d. Bernouli's theorem

Que- Which of the following instrument is used to measure Soil Water Tension?

a. Photometer

b. Pyrometer

c. Psychrometer

d. Tensiometer

Que- Blotting paper absorbs ink due to

a. Capillary action phenomenon

b. Diffusion of ink through the blotting

c. Siphon action

d. Viscosity of ink

Que- Name the process by which bubbles from liquid are formed?

a. Effervescence

b. Surface Tension

c. Surface Energy

d. Degasification

Que- The distance between node and adjacent antinode is 30 cm. The wavelength is

a. 30 cm.

b. 90 cm.

c. 120 cm.

d. 60 cm.

Que- The material used in the fabrication of a transistor is

a. Aluminium

b. Copper

c. Silicon

d. Silver

Que- For which Diode is used ?

a. Modulation

b. Oscillation

c. Amplification

d. Purification

Que- The complete form of 'IC' in electronics is

a. Internal circuit

b. Independent circuit

c. Integrated circuit

d. Inbuilt circuit

Que- In electronics what comes under tank circuit ?

a. Resistance and capacity

b. Resistance and inductance

c. Capacity and inductance

d. Resistance, capacity and inductance

Que- Why does ice covered in sawdust not melt quickly ?

a. Sawdust does not allow the air to touch the ice

b. The water is absorbed by sawdust

c. Sawdust is a bad conductor of heat

d. Sawdust is good conductor of heat

Que- Ice is packed in saw dust because

a. Saw dust will not get melted easily.

b. Saw dust is poor conductor of heat.

c. Saw dust is a good conductor of heat.

d. Saw dust does not stick to the ice.

Answer- Saw dust is poor conductor of heat.

Que- In general, which is the cause of a sea breeze?

a. Pressure

b. Specific heat

c. Heat

d. All the above

Que- Outside of cooking utensils are generally left black from below because

a. It is difficult to clean daily.

b. Black surface is a good conductor of heat.

c. Black surface is a poor conductor of heat.

d. Black surface is a good absorber of heat.

Answer- Black surface is a good absorber of heat.

Que- Heat transfer by radiation mainly depends upon

a. Kind and extent of its surface

b. Its temperature

c. Nature of the body

d. All of the above

Que- The energy emitted by the Sun is due to

a. Chemical reaction

b. Nuclear fission

c. Nuclear fusion

d. All of the above

Que- Where does hydroelectric energy come from?

a. Air

b. Water

c. Solar

d. All of the above

Que- Which colour has the highest energy?

a. Violet

b. Red

c. Blue

d. White

Que- Red is used as an emergency or danger signal as

a. It is a striking colour

b. Its wavelength is the longest

c. It is scattered

d. It has very high energy

Answer- Its wavelength is the longest

Que- Which of these travels in glass with minimum velocity ?

a. Red light

b. Violet light

c. Green light

d. Yellow light

Que- A body falling through a liquid acquires a steady velocity is known as

a. End velocity

b. Touch down velocity

c. Terminal velocity

Que- The spoon dropped by an astronaut in a satellite will

a. Fall to the floor

b. Remain stationary

c. Continue to follow the motion of the satellite

d. Move tangentially away

Que- An aircraft can perform aerobatic manoeuvres in a vertical loop because of

a. Gravity

b. Centripetal force

c. Weight

d. Centrifugal force

Que- Which one is not a part of Kepler's Law?

a. Law of orbits

b. Law of areas

c. Law of speed

d. Law of periods

Que- Kepler's law of planetary motion states that the square of the time period is proportional to the

a. Semi-major axis

b. Square of the semi-major axis

c. Cube of the semi-major axis

d. Fourth power of the semi-major axis

Answer- Cube of the semi-major axis

Que- Which of the following is a device designed to protect electrical devices from voltage spikes?

b. Surge protector

c. Heat protector

Que- The working of the quartz crystal in the watch is based on the

a. Piezo - electric Effect

b. Edison Effect

c. Photoelectric Effect

d. Johnson Effect

Que- At low temperature, Lead behaves as a :

a. Semi conductor

b. Superconductor

c. Insulator

d. Conductor

Que- The device which transfer the signal from low resistance region to high resistance region is

a. Diode

b. Transistor

c. Capacitor

d. Inductor

Que- The frequency of direct current is ________

a. Zero

b. 50 HZ

c. 60 HZ

d. 100 HZ

Que- Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?

a. Pressure and Young's modules

b. Planck's constant and Angular momentum

c. Impulse and moment of force

d. Force and rate of change of linear momentum

Answer- Impulse and moment of force

Que- If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:

a. Velocity

b. Momentum

c. Acceleration

d. Kinetic energy

Que- Pick out the scalar quantity

a. Force

b. Pressure

c. Velocity

d. Acceleration

Que- Rectifiers are used to convert:

a. Direct current to Alternating current

b. Alternating current to Direct current

c. High voltage to low voltage

d. Low voltage to high voltage

Answer- Alternating current to Direct current

Que- Out of the following, which is not emitted by  radioactive substance?

a. Electrons

c. Alpha particles

d. Neutrons

Que- The domain theory of magnetism applies to

a. Aluminium

b. Copper

c. Silver

d. Cobalt

Que- The paramagnetic theory of magnetism applies to

a. Nickel

b. Mercury

c. Iron

d. Platinum

Que- Where should a boat compass be mounted?

a. Near magnet

b. Near iron

c. Away from electrical wiring

d. All the above