Advertisements
Advertisements
Question
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
Advertisements
Solution
We know the relation between velocity, frequency, and wavelength
ν = f × λ,
where ν is the velocity, f the frequency, and λ the wavelength
Velocity of sound is constant for a given condition. Therefore, if wavelength is doubled, frequency is halved.
APPEARS IN
RELATED QUESTIONS
How does the sound produced by a vibrating object in a medium reach your ear?
A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
If 20 waves are produced per second, What is the frequency is hertz?
How is sound produced? Explain with the help of an example.
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the strings.
(a) what is their wavelength?
(b) what is their frequency
(c) what is their speed?
Which of the following vibrates when a musical note is produced by the cymbals in an orchestra?
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
Suppose a stick is struck against a frying pan in vacuum. Will the frying pan vibrate? Will we be able to hear the sound? Explain.
The substance through which sound is transmitted is called ______.
