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Physics 914 MCQs [All-Courses]

Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

The internal energy of the system increases__________?

A in adiabatic expansion

B in adiabatic compression

C in isothermal expansion

D in isothermal compression

Review Detailed Answer

Correct Answer: in adiabatic 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

Review Detailed Answer

Correct Answer: 1 : 1

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

Review Detailed Answer

Correct Answer: 160 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

Review Detailed Answer

Correct Answer: F

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Physics 914 MCQs [All-Courses]

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All Topics 914

The internal energy of the system increases__________?

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

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

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_________?