Physics MCQs

852 MCQs  (Page 69 of 86)

Attempt Physics Quiz
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
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When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
A. Decreases
B. Increases
C. Remains unchanged
D. Becomes zero
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If stretching force T of wire increases, then its frequency __________________?
A. Decreases
B. Increases
C. Remains the same
D. Any of above
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It is possible to distinguish between transverse and longitudinal waves form the property of __________________?
A. Refraction
B. Polarization
C. Interference
D. Diffraction
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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
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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
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On loading the prong of a tuning form with wax its frequency____________________?
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease
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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
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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
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Silence zone takes place due to____________________?
A. Constructive interference
B. Destructive interference
C. Beats
D. Resonance
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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