Advertisements
Advertisements
प्रश्न
A body vibrating with a time-period of `1/256` s produces a sound wave which travels in air with a velocity of 350 m/s. Calculate the wavelength.
Advertisements
उत्तर
We have to find the wavelength of the sound wave.
Given: Velocity of sound wave ν = 350 m/s
We have to first find the frequency of oscillation.
Time period (T) = `1/256` s
We know the relation between frequency and time period `f = 1/T`,
where f is the frequency and T the time period.
So,
`f = 256/1` Hz
= 256 Hz
Now we can calculate wavelength as `lambda = v/f`,
where ν is the velocity, f the frequency, and λ the wavelength.
So,
`lambda = 350/256` m
= 1.367 m
Therefore, velocity of sound is 1.37 m.
APPEARS IN
संबंधित प्रश्न
Name one solid, on liquid and one gas through which sound can travel.
In which medium sound travels faster : air or iron?
Which of the following terms apply to sound waves in air and which to water waves?
Transverse, Rarefaction, Trough, Crest, Compression, Longitudinal
Sound travels in air :
Explain the experiment, with a neat diagram, to prove the following:
'Sound needs material medium for propagation.'
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
How long will sound take to travel in (a) and iron rail and (b) air, both 3.3 km in length? Take speed of sound in air to be 330 m/s and in iron to be 5280 m/s.
Write the answer in your own words.
Explain with the help of practical examples how sound is propagated through solids.
What is the approximate value of the speed of sound in air at N.T.P.?
In any medium, as the ______ increases, the speed of sound also increases.
