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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 current through a metallic conductor is due to the motion of _________________?

A free electrons

B protons

C neutrons

D still under controversy

Review Detailed Answer

Correct Answer: free electrons

Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?

A One

B Two

C Four time

D None of these

Review Detailed Answer

Correct Answer: Two

The beats frequency (sensible) for a human car is _____________________?

A 42Hz

B 7 Hz

C 256Hz

D 262Hz

Review Detailed Answer

Correct Answer: 7 Hz

Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?

A isothermal law

B adiabatic law

C isochoric law

D all of the above

Review Detailed Answer

Correct Answer: adiabatic law

Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

A Longitudinal

B Transverse

C Periodic

D both A and C

Review Detailed Answer

Correct Answer: both A and C

The dimension of elastic modulus is ___________________ ?

A ML-1T-2

B ML-2T-2

C MLT-2

D ML2T-2

Review Detailed Answer

Correct Answer: ML-1T-2

In open organ pipe___________________?

A only even harmonics are present

B only odd harmonics are present

C both even and odd harmonics are present

D selected harmonics are present

Review Detailed Answer

Correct Answer: both even and odd harmonics are present

A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

A 1/4f

B 1/2f

C frequency lower than 20 Hz

D 2f

Review Detailed Answer

Correct Answer: frequency lower than 20 Hz

Doppler effect applies to____________________?

A sound wave only

B light wave only

C both sound and light waves

D neither sound nor light wave

Review Detailed Answer

Correct Answer: both sound and light waves

Beats are the results of____________________?

A diffraction of sound waves

B constructive and destructive interference

C polarization

D destructive interference

Review Detailed Answer

Correct Answer: constructive and destructive interference

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Physics 914 MCQs [All-Courses]

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All Topics 914

The current through a metallic conductor is due to the motion of _________________?

Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?

The beats frequency (sensible) for a human car is _____________________?

Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?

Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

The dimension of elastic modulus is ___________________ ?

In open organ pipe___________________?

A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

Doppler effect applies to____________________?

Beats are the results of____________________?