Priyanka B Solutions for Chapter: Sound, Exercise 1: Practice Problems

A body is vibrating $6,000$ times in one minute. If the velocity of sound in air is $360 {\mathrm{ms}}^{-1}$, find frequency of vibration in hertz.

Radio station transmits music at $219 \mathrm{m}$ wavelength and $1,300 \mathrm{kHz}$ frequency. Calculate the velocity of radiowaves.

A longitudinal wave is travelling along a spiral spring with velocity of $1 \mathrm{m} {\mathrm{s}}^{-1}$. If time period of wave is $0.1 \mathrm{s}$, what is its wavelength?

A boat at anchor is rocked by waves whose crests are $100 \mathrm{m}$ apart and whose velocity is $25 \mathrm{m} {\mathrm{s}}^{-1}$. How often do the crests reach the boat in? Choose the correct answer.

The sound wave travels with a speed of about $330 \mathrm{m} {\mathrm{s}}^{-1}$. What is the wavelength of sound whose frequency is $550$ hertz?

If the period of small ripples on water is $0.1 \mathrm{s}$ and their wavelength is $5 \mathrm{cm}$, what is the speed of the wave?

A wave is moving in the air with a velocity of $340 \mathrm{m} {\mathrm{s}}^{-1}$. Calculate the wavelength, if its frequency is $512$ vibrations per second.

At $25°\mathrm{C}$, sound travels at a speed of about $346 \mathrm{m} {\mathrm{s}}^{-1}$. What is the wavelength of sound whose frequency is $550$ hertz?