Free Online Physics MCQs Practice

If you want t prepare Physics mcqs for passing initial tests of Army, Navy or PAF or any other competitive exams then here all past experiences have been shared which will help you to pass the physics mcqs tests easily. Moreover, these questions are basic which are very important for those who are applying for the jobs at matric level like Soldiers, Airman, Sailors or civilians tests of Army, navy or Pakistan Air Force.

Physics MCQs Quiz with Answers

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Physics Tests Quiz (Matric Level)

1 / 25

What is appropriate unit of SI unit of distance is _______?

Yard

Meter

Feet

Kilometer

2 / 25

According to Hooke's law:-

both a , c

F= k/x

F = -kx

F = kx

3 / 25

Force acting on unit area is called_________.

Strain

Pressure

Energy

Work

4 / 25

Which has greater coefficient of linear expansion?

Glass

Aluminum

None

Wood

5 / 25

The instruments used to measure air pressures is called

Galvanometer

Barometer

Hypsometer

Manometer

6 / 25

If we want to charge the electroscope positively, touch its disc with a body who has:-

none of these

either of these

positively charged

negatively charged

7 / 25

Reflective Index of Glass is …………….?

1.39

1.5

1.33

2.5

8 / 25

Stress is equal to:-

Force/area

Area/Force

Area/length

Lenght/area

9 / 25

The formula of momentum is:-

P= Fa

F = ma

p = mv

F = mg

10 / 25

The force acting on a unit ___ is called stress:-

Mass

Volume

Length

Area

11 / 25

To add vectors we kept in mind their____:-

Unit

Magnitude

Direction

Norm

12 / 25

Velocity of the directed motion of free electron is:-

none of the above

uniform

drift

relative

13 / 25

Force is directly proportional to ______:-

Speed

Mass

Velocity

Acceleration

14 / 25

Volume is a _____ quantity:-

Vector

Scalar

Both

None

15 / 25

Which of the following material has large value of temperature coefficient of linear

expansion?

Gold

Aluminum

Steel

Brass

16 / 25

If L and C denote inductance and capacitance, the dimensions of L&C are:

M⁰L⁰T⁰

17 / 25

The waves in which particles of medium vibrates perpendicular to motion of waves are called:-

transverse waves

none of these

electromagnetic waves

longitudinal waves

18 / 25

………………is the Number of moles of solute in 1000 g (1kg) of solvent.

Molarity

Mixture

Solution

Current

19 / 25

Rub two plastic rods with fur and suspend them horizontally in a line close to each other, then they will;-

remain neutral

none of these

attract each other

repel each other

20 / 25

In Myopia the eyeball's size:-

contract

remain same

decrease

Increase

21 / 25

One Newton is equal to:-

1 kg -1m-1s-2

1 kgm/s

1 kgms-2

1 kg m2s-2

22 / 25

Which of the following does not change when the wave change its medium:-

All of them

23 / 25

The coil of transformer in which change in current produced induced current in another coil is known as:-

solenoid

primary

Secondary

all of them

24 / 25

Sea saw is an example of:-

Random motion

Linear motion

translatory ,motion

Vibratory motion

25 / 25

The SI unit of capacitance is:-

Ohm

Farad

Ampere

Coulomb

Your score is

The average score is 41%

More Physics MCQs Online Free Solved

Mechanics : Physics MCQs

The SI unit of force is:
- a) Newton
- b) Joule
- c) Watt
- d) Pascal
- Answer: a)
The rate of change of velocity is called:
- a) Acceleration
- b) Speed
- c) Displacement
- d) Momentum
- Answer: a)
A body of mass 10 kg is moving with a velocity of 2 m/s. Its kinetic energy is:
- a) 10 J
- b) 20 J
- c) 40 J
- d) 80 J
- Answer: b)
The principle of conservation of momentum states that:
- a) Momentum can be created or destroyed
- b) Momentum remains constant in an isolated system
- c) Momentum is directly proportional to velocity
- d) Momentum is inversely proportional to mass
- Answer: b)
The pressure exerted by a force of 20 N on an area of 5 m² is:
- a) 4 Pa
- b) 5 Pa
- c) 10 Pa
- d) 20 Pa
- Answer: a)

Heat and Temperature : Physics MCQs

The SI unit of temperature is:
- a) Celsius
- b) Fahrenheit
- c) Kelvin
- d) Calorie
- Answer: c)
The process of conversion of a liquid into a gas is called:
- a) Evaporation
- b) Condensation
- c) Sublimation
- d) Freezing
- Answer: a)
Specific heat capacity of a substance is the amount of heat required to raise the temperature of:
- a) 1 kg of the substance by 1°C
- b) 1 g of the substance by 1°C
- c) 1 kg of water by 1°C
- d) 1 g of water by 1°C
- Answer: a)

Light : Physics MCQs

The phenomenon of bending of light as it passes from one medium to another is called:
- a) Reflection
- b) Refraction
- c) Diffraction
- d) Dispersion
- Answer: b)
The image formed by a plane mirror is:

a) Real and inverted
b) Virtual and inverted
c) Real and erect
d) Virtual and erect
Answer: d)

Sound : Physics MCQs

The speed of sound in air is approximately:

a) 340 m/s
b) 300 m/s
c) 250 m/s
d) 200 m/s
Answer: a)

The unit of frequency is:

a) Hertz
b) Decibel
c) Meter
d) Second
Answer: a)

Electricity : Physics MCQs

The SI unit of electric current is:

a) Volt
b) Ampere
c) Ohm
d) Watt
Answer: b)

Ohm’s law states that:

a) Current is directly proportional to voltage
b) Current is inversely proportional to voltage
c) Voltage is directly proportional to resistance
d) Resistance is inversely proportional to current
Answer: a)

The device used to measure electric current is called:

a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Galvanometer
Answer: b)

Magnetism : Physics MCQs

The magnetic field lines around a bar magnet are:

a) Straight lines
b) Circular
c) Curved lines
d) Parallel lines
Answer: c)

The north pole of a magnet attracts the:

a) North pole of another magnet
b) South pole of another magnet
c) Both north and south poles of another magnet
d) None of the above
Answer: b)

Modern Physics : Physics MCQs

The phenomenon of emission of electrons from a metal surface when light of suitable frequency falls on it is called:

a) Photoelectric effect
b) Compton effect
c) Pair production
d) Nuclear fission
Answer: a)

Radioactivity is the process of:

a) Emission of alpha, beta, and gamma rays
b) Emission of only alpha rays
c) Emission of only beta rays
d) Emission of only gamma rays
Answer: a)

The nucleus of an atom consists of:

a) Protons only
b) Neutrons only
c) Protons and neutrons
d) Electrons and protons
Answer: c)

Related: How to Join Pak Army?

What is the SI unit of force?

A) Joule
B) Newton
C) Watt
D) Pascal
Answer: B) Newton

Which law states that for every action, there is an equal and opposite reaction?

A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) Law of Gravitation
Answer: C) Newton’s Third Law

What is the speed of light in a vacuum?

A) 3×10⁶ m/s
B) 3×10⁷ m/s
C) 3×10⁸ m/s
D) 3×10⁹ m/s
Answer: C) 3×10⁸ m/s

Which quantity remains constant in an isolated system?

A) Mass
B) Energy
C) Velocity
D) Momentum
Answer: B) Energy

What is the unit of electric current?

A) Volt
B) Ohm
C) Ampere
D) Watt
Answer: C) Ampere

Who is known as the father of modern physics?

A) Isaac Newton
B) Albert Einstein
C) Galileo Galilei
D) Nikola Tesla
Answer: B) Albert Einstein

Which type of mirror is used in car rearview mirrors?

A) Plane mirror
B) Concave mirror
C) Convex mirror
D) Spherical mirror
Answer: C) Convex mirror

What is the acceleration due to gravity on the Earth’s surface?

A) 7.8 m/s²
B) 8.8 m/s²
C) 9.8 m/s²
D) 10.8 m/s²
Answer: C) 9.8 m/s²

What is the phenomenon of splitting of light into its component colors called?

A) Reflection
B) Refraction
C) Dispersion
D) Diffraction
Answer: C) Dispersion

What device is used to measure electric current?

A) Voltmeter
B) Galvanometer
C) Ammeter
D) Barometer
Answer: C) Ammeter

What is the basic unit of electric charge?

A) Coulomb
B) Ampere
C) Volt
D) Farad
Answer: A) Coulomb

Who formulated the theory of relativity?

A) James Clerk Maxwell
B) Albert Einstein
C) Niels Bohr
D) Werner Heisenberg
Answer: B) Albert Einstein

What is the main constituent of the Sun?

A) Hydrogen
B) Oxygen
C) Nitrogen
D) Helium
Answer: A) Hydrogen

What is the SI unit of work?

A) Joule
B) Newton
C) Watt
D) Pascal
Answer: A) Joule

Which of the following is a vector quantity?

A) Mass
B) Speed
C) Velocity
D) Temperature
Answer: C) Velocity

What is the formula for calculating kinetic energy?

A) KE=1/2mv²
B) KE=mv
C) KE=mg
D) KE=mgh
Answer: A) KE=12mv²

Which law explains why we feel a backward push when a bus starts suddenly?

A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) Hooke’s Law
Answer: A) Newton’s First Law

In an electric circuit, what is the role of a resistor?

A) Increases current
B) Stores energy
C) Reduces current
D) Converts AC to DC
Answer: C) Reduces current

What type of energy is stored in a stretched spring?

A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Sound energy
Answer: B) Potential energy

Who discovered the electron?

A) Isaac Newton
B) Albert Einstein
C) J.J. Thomson
D) Rutherford
Answer: C) J.J. Thomson

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