Class 9 Science SOUND Mix Example - SOUND

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$(a)$ What type of wave is represented by a density-distance graph?
$(b)$ What is meant by a transverse wave? Give an example.

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(N/A) density-distance graph represents a longitudinal wave,as longitudinal waves involve variations in density and pressure of the medium.
$(b)$ $A$ transverse wave is a wave in which the particles of the medium vibrate in a direction perpendicular to the direction of wave propagation. An example of a transverse wave is the wave produced in a vibrating string or light waves.

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Two musical notes of the same pitch and loudness are played on a violin and a piano. The waveforms are as shown in the figures below. Explain why the wave patterns are different.

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Define echo. Establish a mathematical relation between speed of sound, distance of reflecting body from source of sound, and time for echo.

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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,

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Sound of explosions taking place on other planets is not heard by a person on the Earth. Give the reason.

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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?

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$(a)$ What type of wave is represented by a density-distance graph?$(b)$ What is meant by a transverse wave? Give an example.

Similar Questions

Two musical notes of the same pitch and loudness are played on a violin and a piano. The waveforms are as shown in the figures below. Explain why the wave patterns are different.

Define echo. Establish a mathematical relation between speed of sound, distance of reflecting body from source of sound, and time for echo.

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

Sound of explosions taking place on other planets is not heard by a person on the Earth. Give the reason.

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?

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$(a)$ What type of wave is represented by a density-distance graph?
$(b)$ What is meant by a transverse wave? Give an example.

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?