Physics MCQs: Most Important Questions for Exams

McqsTestz.com has uploaded a comprehensive collection of Physics MCQs covering a wide range of topics including mechanics, thermodynamics, electromagnetism, optics, modern physics, waves, fluids, and more. Perfect for students preparing for exams such as matriculation, intermediate, competitive tests, Lecturer and university-level assessments.

Physics MCQs

Potential energy means?

A. Due to position of object

B. Due to motion of object

C. Due to gravity

D. None of these

A ball is thrown towards the earth and bounce back. During this process:

A. Direction of velocity and acceleration changes

B. Direction of Displacement and acceleration changes

C. Direction of Displacement and Velocity changes

D. Direction of Displacement, Velocity and acceleration changes

An object travels at constant speed around a circle of radius 1.0 m in 2.0 seconds. What is the magnitude of its acceleration?

A. 0

B. π2

C. 2 π2

D. 4 π2

A football is kicked at 45 degrees with horizontal with K.E of E. Its K.E. at highest point is

A. Zero

B. E/2

C. E

D. E/(2)1/2

The internal energy of the system increases__________?

A. in adiabatic expansion

B. in adiabatic compression

C. in isothermal expansion

D. in isothermal compression

What is the ratio of the velocity of sound at 4 atmosphere to that at 1 atmosphere?

A. 4 : 1

B. 1 : 1

C. 2 : 1

D. 1 : 2

The first overtone of a stretched string of given length is 320 Hz. The first harmonic is_________?

A. 320 Hz

B. 640 Hz

C. 160 Hz

D. 480 Hz

Two identical metal balls with charges + 2Q and – Q are separated by some distance, and exert a force F on each other. They are joined by a conducting wire, which is then removed. The force between them will now be_________?

A. F

B. F/2

C. F/4

D. F/8

A million electron are added to a pith ball. Its charge is________?

A. – 1.6 × 10–12 coulomb

B. – 1.6 × 10–13 coulomb

C. – 1.6 × 10 –18 coulomb

D. – 1.6 × 10 coulomb

A cube of side 5 cm has a charge of 6 C. The surface density of charge is_________?

A. 100 C m–2

B. 200 C m–2

C. 300 C m–2

D. 400 C m–2

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