Advertisements
Advertisements
प्रश्न
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
उत्तर
Speed of sound wave, v = 339 m s−1
Wavelength of sound wave, `lambda` = 1.5 cm = 0.015 m
Speed of sound wave = Wavelength × Frequency
`"v"=lambdaxxupsilon`
∴ `upsilon`
= `"v"/lambda`
= `339/0.015`
= 22600 Hz
The frequency range of audible sound for humans lies between 20 Hz to 20,000 Hz. Since the frequency of the given sound is more than 20,000 Hz, it is not audible.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Sound can travel in a vacuum.
During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?
If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?
Which term is used to denote a speed greater than the speed of sound?
A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
Write the formula for speed of sound in a gas using Laplace correction.
Why does the flash of lighting reach earlier than the sound of thunder?
The velocity of sound in solid is ______ than the velocity of sound in air.
Sound travels faster in ______ and slower in ______.
