31)Do all bodies produce sound ___
32) The voice box is also called as
a) stomach
b) heart
c) larynx
d) mouth
33) Pitch of sound is determined by its
a) frequency
b) speed
c) amplitude
d) loudness
34) Cochlea is a part of
a) hearing organ
b) sound producing organ
c) muscular organ
d) air pollution
35) 1 hertz is equal to
a) 1 vibration per minute
b) 10 vibrations per minute
c) 60 vibrations per minute
d) 600 vibrations per minute
36) A pendulum oscillates 20 times in 4 seconds. Find its time period.
a) 0.05 sec.
b) 0.001 sec.
c) 0.2 sec.
d) 0.1 sec
37) The maximum displacement of a body from its mean position is called ________ .
a) amplitude
b) oscillation
c) periodic motion d) frequency
38) Vibration is also known as
a) Vibratory motion
b) Translatory motion
c) Oscillatory motion
d) None of these
39) Voice of man is heavy compared to a woman because _____ .
a) Female vocal cord is longer
b) Male vocal cord is shorter
c) Male vocal cord is longer
d) The concept is not related
40) An object is vibrating at 50 hertz. What is its time period?
a) 0.02 s
b) 2 s
c) 0.2 s
d) 20.0 s
41 What is the length of vocal cords in men?
a) 5 mm
b) 10 mm
c) 15 mm
d) 20 mm
Answers
Answered by
2
Answer:
31)B
32)A
33)D
34)C
35)D
36)C
37)B
38)A
39)C
40)D
41)D
Explanation:
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Answered by
3
Explanation:
How does sound travel?
In order to propagate, sound requires a medium through which it can travel. This medium could be a gas, liquid or solid.
Sound propagates in a medium as the particles of the medium vibrate from a starting point. This means that sound always has a starting point and an ending point.
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