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

To paint new cars automobile workers use?

Inductor

Current Electricity

Capacitor

Static Electricity

2 / 25

The foot-pound is the unit of

Time

Length

Weight

Energy

3 / 25

Unit of Torque is ?

None

K Joul

4 / 25

Which instrument is most suitable to measure the internal diameter of a test tube________?

Vernier Calipers

Screw Gauge

Measuring Tape

Meter Rule

5 / 25

First law of thermodynamics when applied on adiabatic process becomes:-

Q = W

W = ΔU

W =- ΔU

Q = ΔU

6 / 25

The SI unit of charge is:-

ampere

volt

Coulomb

ohm

7 / 25

Falcon can fly at a speed of:-

150 Km/h

250 Km/h

350 Km/h

200 Km/h

8 / 25

The acceleration of a body falling freely is:-

10 ms-1

10 m²s-²

10 ms-²

10 m²s-1

9 / 25

Mathematically first condition of equilibrium is represented by:-

∑F= 1.0

∑F= 0

∑F= 0.1

None of them

10 / 25

The rate at which work is done is called:-

power

Energy

Work

momentum

11 / 25

The motion of a body about an axis is called_______?

Circular Motion

Random Motion

Vibratory Motion

Rotatory Motion

12 / 25

One cubic centimeter is equivalent to________.

One milliliter

One liter

10 cubic milliliter

One square decimeter

13 / 25

A wooden bar vibrating into the water surface in a ripple tank has a frequency of 12 Hz. The resulting waves has a wavelength of 3 cm. What is speed of 36 ms-1 waves by using V= ft:-

none of these

36 ms-1

360 ms-1

0.36 s-1

14 / 25

Half-life of an element is 20 years then its real life is ……………?

20 Years

10 Years

30 Years

40 Years

15 / 25

What is the least count of mechanical stopwatch:-

0.1 s

0.0001 s

0.001 s

0.01 s

16 / 25

Focal length is negative in:-

plane mirror

all of these

Concave mirror

convex mirror

17 / 25

A device which is used to store charges is called?

Barometer

Fuse

Transistor

Capacitor

18 / 25

An atom having some atomic number but different mass number is called ……………..?

Helium

Nucleus

Isotopes

Lithium

19 / 25

One Cubic meter is equal to__?

100L

1000L

10L

106L

20 / 25

Convert 54 kmh-1 into ms-1:-

5 ms-1

20 ms-1

10 ms-1

15 ms-1

21 / 25

Two vectors are at right angle then?

A.B=0

A-B=0

A×B=0

A+B=0

22 / 25

In an electric circuit when electrons move from low to high potential they will:-

lose their identity

lose energy

gain potential

gain energy

23 / 25

The first person who transmitted the first radio signal on air:-

Graham bell

Einstein

Galileo

Marconi

24 / 25

A scientific theory has which of the following properties?

It cannot be rejected

It has been absolutely

It does not to be altered in the light of new evidence

It agree with available evidence

25 / 25

10^-15 is equal to _____ femto:-

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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