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Question (1)

QN006012

The amount of sound energy passing through unit area per unit time is called

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

Correct Answer: C

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Question (2)

QN006013

Loudness of sound mainly depends on

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

Correct Answer: C

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Question (3)

QN006014

A sound wave with greater amplitude carries

(A) less energy
(B) more energy
(C) no energy
(D) constant energy

Correct Answer: B

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Question (4)

QN006015

The SI unit of intensity of sound is

(A) watt per square metre
(B) joule
(C) hertz
(D) decibel

Correct Answer: A

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Question (5)

QN006016

Energy of a sound wave is proportional to

(A) wavelength only
(B) frequency only
(C) square of amplitude
(D) speed only

Correct Answer: C

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Question (6)

QN006017

If amplitude of a sound wave becomes double, its energy becomes

(A) half
(B) double
(C) four times
(D) eight times

Correct Answer: C

Explanation:

Energy ∝ amplitude²

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Question (7)

QN006018

A sound wave has amplitude 3 units. Another wave has amplitude 6 units. The second wave carries

(A) same energy
(B) double energy
(C) four times energy
(D) six times energy

Correct Answer: C

Explanation:

Energy ∝ amplitude²

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Question (8)

QN006019

Which property of sound is related to the energy received by the ear?

(A) Pitch
(B) Loudness
(C) Frequency
(D) Wavelength

Correct Answer: B

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Question (9)

QN006020

A louder sound transfers

(A) less energy
(B) more energy
(C) zero energy
(D) only heat energy

Correct Answer: B

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Question (10)

QN006021

Which factor directly increases the intensity of sound?

(A) Decreasing amplitude
(B) Increasing amplitude
(C) Decreasing frequency to zero
(D) Increasing wavelength only

Correct Answer: B

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Question (1)

The amount of sound energy passing through unit area per unit time is called

Explanation:

Link:

Question (2)

Loudness of sound mainly depends on

Explanation:

Link:

Question (3)

A sound wave with greater amplitude carries

Explanation:

Link:

Question (4)

The SI unit of intensity of sound is

Explanation:

Link:

Question (5)

Energy of a sound wave is proportional to

Explanation:

Link:

Question (6)

If amplitude of a sound wave becomes double, its energy becomes

Explanation:

Link:

Question (7)

A sound wave has amplitude 3 units. Another wave has amplitude 6 units. The second wave carries

Explanation:

Link:

Question (8)

Which property of sound is related to the energy received by the ear?

Explanation:

Link:

Question (9)

A louder sound transfers

Explanation:

Link:

Question (10)

Which factor directly increases the intensity of sound?

Explanation:

Link:

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