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

When resistors are connected in series, current passing through them is:-

maximum

same

different

variable

2 / 25

One cubic meter is equal to:-

100 litres

1/1000 litres

10,000 litres

1000 litres

3 / 25

Stress/ strain = constant is:-

Newton's law

pascal's law

Archimedes principle

Hooke's law

4 / 25

In CRO the potential of grid is:-

negative

neutral

positive

zero

5 / 25

Addition of vectors are joined by which rule?

Head to Tail rule

Newton Law

Law of conservation

None

6 / 25

To measure current with the help of ammeter, it is connected in circuit in_____ combination;-

series

none of them

parallel

both a , b

7 / 25

Food is cooked quicker in pressure cooker because;-

it is a good conductor of heat

cooker is made of steel

no heat is lost

High steam pressure rises the boiling point of liquid

8 / 25

The example of bad conductor is:-

copper

gold

iron

wool

9 / 25

What is the unit of Impendce:-

Ohm

10 / 25

Turns ratio in a transformer is 1: 100, it means that:-

Ns = 10 Np

Ns = 10 N

Ns = 1 Np

Ns = 10 Ns

11 / 25

For OR operations switches should be connected in?

Series Combination

Series Parallel Combination

Parallel Combination

Alternative Combination

12 / 25

Bernoulli equation is applicable in case of:

none

Streamline and compressible fluid

Turbulent flow

Streamline flow of incompressible fluid

13 / 25

The SI unit of charge is:-

ampere

Coulomb

volt

ohm

14 / 25

Al-Beruni wrote more than:-

150 books

350 books

250 books

450 books

15 / 25

1 radian = ………….

0 degree

180/π degrees

2 π degree

π/180 degree

16 / 25

The human eye has:-

convex mirror

convex lense

concave mirror

concave lense

17 / 25

A capacitor is said to be charged if its plates carry equal and _____ charges.

Neutral

Negative

Same

Opposite

18 / 25

According to first law of Newton, mass of an object is qualitative measure of its:

Moment of Inertia

Inertia

Force

Momentum

19 / 25

Telephone consist of:-

all of these

diaphragm

electromagnet

microphone

20 / 25

What should be the length of simple pendulum whose period is 6.28 second at place where g = 10m/s2:-

6.28 m

10 m

9.8 m

10.8 m

21 / 25

Current is a _____ quantity:-

Vector

Physical

Chemical

Scalar

22 / 25

If the efficiency of a machine is 100 per cent then it is called a-_______.

Cannot engine

Fantastic machine

Ideal machine

Practical machine

23 / 25

Convert 0K in Fahrenheit:-

-459

273

-273

459

24 / 25

_____ is the smallest quantity:-

5000 ng

0.01 g

2 mg

100 μg

25 / 25

The ratio of weight and force is called ____:-

Mechanical advantage

None

Physical advantage

Chemical advantage

Your score is

The average score is 36%

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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