Sound and Waves CDS Questions

CDS Physics

Sound and Waves MCQ Questions


13.
Sound cannot travel through ______
A.
Air
B.
Vacuum
C.
Water
D.
Light
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ANSWER :
B. Vacuum
14.
The Sound in the Audible Range is known as
A.
Sonic Sound
B.
Ultrasonic Sound
C.
infrasonic Sound
D.
Frequency
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ANSWER :
A. Sonic Sound
15.
Photoelectric Effect was discovered by
A.
Millikan
B.
Lenard
C.
M. Faraday
D.
Heinrich Hertz
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ANSWER :
D. Heinrich Hertz
16.
The persistance of sound caused by the multiple sound reflections even after the source has stopped is called ______
A.
Reflection
B.
Refraction
C.
Reverberation
D.
None of the above
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ANSWER :
C. Reverberation
17.
The sensation of sound persists in the human brain for about ______ second.
A.
0.1
B.
1
C.
10
D.
100
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ANSWER :
A. 0.1
18.
Rhinoceroses communicate with _______ frequency
A.
Infrasonic
B.
Ultrasonic
C.
SuperSonic
D.
None of the above
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ANSWER :
A. Infrasonic