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Questions

Question (1)

QN006102

The maximum displacement of particles from their mean position in a sound wave is called

(A) wavelength
(B) frequency
(C) amplitude
(D) velocity

Correct Answer: C

Explanation:

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Question (2)

QN006103

The number of vibrations produced per second is known as

(A) amplitude
(B) frequency
(C) wavelength
(D) intensity

Correct Answer: B

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Question (3)

QN006104

The SI unit of frequency is

(A) metre
(B) second
(C) hertz
(D) decibel

Correct Answer: C

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Question (4)

QN006105

The distance travelled by a wave during one complete vibration is called

(A) amplitude
(B) wavelength
(C) pitch
(D) loudness

Correct Answer: B

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Question (5)

QN006106

The time taken for one complete vibration is called

(A) frequency
(B) wavelength
(C) time period
(D) intensity

Correct Answer: C

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Question (6)

QN006107

If a sound source produces 200 vibrations in 10 seconds, its frequency is

(A) 10 Hz
(B) 20 Hz
(C) 40 Hz
(D) 200 Hz

Correct Answer: B

Explanation:

Frequency = vibrations/time = 200/10 = 20 Hz

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Question (7)

QN006108

A sound wave has frequency 50 Hz. Its time period is

(A) 0.5 s
(B) 0.2 s
(C) 0.02 s
(D) 2 s

Correct Answer: C

Explanation:

T = 1/f = 1/50 = 0.02 s

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Question (8)

QN006109

Loudness of sound mainly depends on

(A) wavelength
(B) frequency
(C) amplitude
(D) speed

Correct Answer: C

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Question (9)

QN006110

Pitch of sound depends on

(A) amplitude
(B) frequency
(C) intensity
(D) velocity only

Correct Answer: B

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Question (10)

QN006111

A sound wave with greater amplitude will sound

(A) softer
(B) louder
(C) shriller
(D) slower

Correct Answer: B

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