(B) The pitch of a sound depends on the frequency of the vibration. Since the same key is struck,the frequency remains constant,and therefore the pitc

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sound will be louder but pitch will not be different

(B) The pitch of a sound depends on the frequency of the vibration. Since the same key is struck,the frequency remains constant,and therefore the pitch does not change.Loudness depends on the amplitude of the vibration. When the key is struck harder,the amplitude of the vibration increases,which results in a louder sound.

Class 9 Science SOUND Mix Example - SOUND

Medium

$A$ key of a mechanical piano is struck gently and then struck again but much harder this time. In the second case,

A
sound will be louder and pitch will also be higher
B
sound will be louder but pitch will not be different
C
sound will be louder but pitch will be lower
D
both loudness and pitch will remain unaffected

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Class 9

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SOUND

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Mix Example - SOUND

Answer the following:
$(i)$ Can transverse waves travel in gases?
$(ii)$ Can longitudinal waves travel in solid,liquid as well as gas?
$(iii)$ At any instant,a compression is formed at a point. After how much time $(a)$ a rarefaction $(b)$ a compression will be formed at the same point?

Medium

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$A$ sound wave with frequency higher than $20 \,kHz$ is not audible for human ear. Answer the following in respect of this statement:
$(i)$ What is the term used for such a sound?
$(ii)$ Name two organisms producing sound in this range.
$(iii)$ Write an application of such a wave.

Medium

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$A$ note is a sound:

Easy

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What is reverberation?

Easy

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What is 'Ultrasound'? Explain how defects in a metal block can be detected using ultrasound.

Medium

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$A$ key of a mechanical piano is struck gently and then struck again but much harder this time. In the second case,

Similar Questions

Answer the following:$(i)$ Can transverse waves travel in gases?$(ii)$ Can longitudinal waves travel in solid,liquid as well as gas?$(iii)$ At any instant,a compression is formed at a point. After how much time $(a)$ a rarefaction $(b)$ a compression will be formed at the same point?

$A$ sound wave with frequency higher than $20 \,kHz$ is not audible for human ear. Answer the following in respect of this statement:$(i)$ What is the term used for such a sound?$(ii)$ Name two organisms producing sound in this range.$(iii)$ Write an application of such a wave.

$A$ note is a sound:

What is reverberation?

What is 'Ultrasound'? Explain how defects in a metal block can be detected using ultrasound.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Answer the following:
$(i)$ Can transverse waves travel in gases?
$(ii)$ Can longitudinal waves travel in solid,liquid as well as gas?
$(iii)$ At any instant,a compression is formed at a point. After how much time $(a)$ a rarefaction $(b)$ a compression will be formed at the same point?

$A$ sound wave with frequency higher than $20 \,kHz$ is not audible for human ear. Answer the following in respect of this statement:
$(i)$ What is the term used for such a sound?
$(ii)$ Name two organisms producing sound in this range.
$(iii)$ Write an application of such a wave.