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Sound MCQs | Sound Objective Type Questions & Answers

Questions
21 The voice box is called:
A Stomach
B Heart
C Larynx
D Mouth

Answer: Larynx
22 Voice box or larynx of human process
A Sound
B Loudness
C Wind
D None

Answer: Sound
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23 What is the speed of sound in air?
A 330 m/s
B 332 m/s
C 334 m/s
D 336 m/s

Answer: 332 m/s
24 What is the unit of loudness?
A Bel
B Phon
C Decibel
D All of the above

Answer: All of the above
25 Compressions are formed where air pressure is
A higher
B lower
C normal
D zero

Answer: higher
26 Sound can be transmitted through a medium which
A contains charge
B has higher density than air
C contains molecules that vibrate
D contains molecules that collide

Answer: contains molecules that vibrate
27 A good example of sound waves is
A Rope
B Slinky spring
C Elastic band
D Elastic rod

Answer: Slinky spring
28 Name the characteristic of the sound which distinguishes a sharp sound from a grave or dull sound?
A Intensity
B Echo
C Pitch
D Resonance

Answer: Pitch
29 Which of the following is/ are not applications of Ultrasonic Waves? (a) For measuring the depth of Sea. (b) In sterilizing of a liquid. (c) In Ultrasonography (d) In sterilizing a needle. Options are:
A Both (a) and (b) Only (b)
B Only (d)
C Both (c) and (d)
D Only (b)

Answer: Only (d)
30 Sensation of sound persists in our brain for about
A 0.001s
B 0.2s
C 0.1s
D 10s

Answer: 0.1s

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