M C Q s D r i v e

Physics 914 MCQs [All-Courses]

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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 periodic alternation of sound between maximum and minimum loudness are called___________________?

A silence zone
B interference
C beats
D resonance
Correct Answer: beats

The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

A 313°C
B 586°C
C 819°C
D 1172°C
Correct Answer: 819°C

The normal ear is the most sensitive in the frequency range___________________?

A 20000 to 30000 hertz
B 10 to 20 hertz
C 2000 to 4000 hertz
D 6000 to 8000 hertz
Correct Answer: 2000 to 4000 hertz

On loading the prong of a tuning form with wax its frequency____________________?

A increases
B decreases
C remains unchanged
D may increase or decrease
Correct Answer: decreases

Increase in velocity of sound in the air for 1°C rise in temperature is_________________?

A 1.61 ms-1
B 61.0 ms-1
C 0.61 ms-1
D 2.00 ms-1
Correct Answer: 0.61 ms-1

Sound waves do not travel in vacuum because ___________________?

A they are transverse waves
B they are stationary waves
C they require material medium for propagation
D they do not have enough energy
Correct Answer: they require material medium for propagation

It is possible to distinguish between transverse and longitudinal waves form the property of __________________?

A refraction
B polarization
C interference
D diffraction
Correct Answer: polarization

If stretching force T of wire increases, then its frequency __________________?

A decreases
B increases
C remains the same
D any of above
Correct Answer: increases

When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?

A decreases
B increases
C remains unchanged
D becomes zero
Correct Answer: remains unchanged

The waves that require a material medium for their propagation are called__________________?

A matter waves
B electromagnetic waves
C carrier waves
D mechanical waves
Correct Answer: mechanical waves