Chhattisgarh Board Solutions for Chapter: Sound, Exercise 2: Exercise

Explain compressions and rarefactions with the help of a diagram.

Explain with the help of an activity that sound propagation requires a medium.

Explain that the sound waves are longitudinal waves.

Explain with diagrams velocity, frequency and wavelength of waves. Also establish a relation between them.Enable GingerCannot connect to Ginger Check your internet connection
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A sound wave travels at a speed of $3329 \mathrm{m} {\mathrm{s}}^{-1}$. If the wavelength is $1.5 \mathrm{cm}$, what is the frequency of this wave? Will it be audible?

The speed of sound in air at a certain temperature is $340 \mathrm{m} {\mathrm{s}}^{-1}$ and its wavelength is $0.017 \mathrm{m}$. If the same sound source is dipped in water, what effect will be produced on its wavelength? If the speed of sound in water is $1480 \mathrm{m} {\mathrm{s}}^{-1}$, calculate.

What step will you take to reduce the pitch of the sound produced by a 'sitar'?

A longitudinal wave whose wavelength is $1 \mathrm{cm}$, propagates in the air with a velocity of $330 \mathrm{m} {\mathrm{s}}^{-1}$. Calculate the frequency of the wave. Can a normal human being hear this sound wave?