Speed of Sound in Air at Room Temperature Using a Resonance Tube NEET Questions

Physics - Experimental Skills

Speed of Sound in Air at Room Temperature Using a Resonance Tube MCQ Questions


7.
How does the speed of sound depend on the pressure of a gas (at constant temperature)?
A.
Inversely proportional to P
B.
Directly proportional to P
C.
Independent of pressure (since P/蟻 is constant at fixed T from PV = nRT)
D.
Proportional to P虏
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ANSWER :
C. Independent of pressure (since P/蟻 is constant at fixed T from PV = nRT)
8.
How does the speed of sound depend on humidity?
A.
Decreases with humidity
B.
Becomes zero at 100% humidity
C.
Increases with humidity (humid air has lower density, since water vapour is less dense than dry air)
D.
Independent of humidity
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ANSWER :
C. Increases with humidity (humid air has lower density, since water vapour is less dense than dry air)
9.
The wavelength 位, frequency f, and speed v of a wave are related by:
A.
v = f 脳 位
B.
v = 位/f
C.
v = f/位
D.
v = f + 位
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ANSWER :
A. v = f 脳 位
10.
Sound waves in air are produced when:
A.
Light waves are reflected
B.
Air pressure changes randomly
C.
A vibrating source disturbs air molecules, creating compressions and rarefactions that propagate outward
D.
Air molecules move with the sound source
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ANSWER :
C. A vibrating source disturbs air molecules, creating compressions and rarefactions that propagate outward
11.
A standing wave is formed when:
A.
Waves are absorbed
B.
Two waves of different frequencies meet
C.
Light interferes
D.
Two waves of the same frequency and amplitude travel in opposite directions and superpose
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ANSWER :
D. Two waves of the same frequency and amplitude travel in opposite directions and superpose
12.
In a standing wave, a node is a point where:
A.
Velocity is zero
B.
Pressure is minimum
C.
Displacement is maximum
D.
Displacement is always zero
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ANSWER :
D. Displacement is always zero