Sound Test - 54...

What is the frequency of a vibrating body whose time-period is 0.05 second?

In the bell jar experiment, after starting the vacuum pump the sound gradually become fainter and finally we hear a feeble sound. Why?

The loudness or softness of a sound is determined basically by ________.

If the wavelength of the wave is $$x$$. Then the distance between compression and the adjoining rarefaction is:

Fix up one end of a slinky to a hook and hold it horizontally. Vibrate the other end to and fro along the length of the spring. If you look at the spring carefully , you will see some parts of the spring are pushed closer , while some other parts are pulled apart.Then which of the following statements are correct about above experiment?

How ultra sound is used to clean hard to reach places?

On stretching a slinky, the regions where the coils become closer are called _____ and the regions where coils are further apart are called ____.

A boy standing at some distance from a cliff claps his hands and heard an echo $$3s$$ later. What is the distance of the cliff from the boy, if the speed of the sound is $$340 m{s}^{-1}$$.

A sonar echo takes 8.8s to return from a shark. How far away is the shark?

If the ceiling of a cinema hall is made flat, what will happen?