Sound Test - 19...

The velocity of sound in vacuum is:

A vibrating body:

The number of cycles an oscillator completes in each second is called its _______________.

A person is listening to a tone 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between the successive compression from the source ?

What is the time period of a wave having frequency of $$50 \ Hz$$?

True or false.
The pitch of the sound made by a guitar string can be lowered by replacing the string with a thicker string.

The distance between two consecutive compressions is $$1.4 m$$. The wavelength of the wave is

An object attached to one end of a spring makes 20 vibrations in 10s. Its frequency is

Some animals get disturbed and start running here and there just before the earthquakes occur because they can hear______________?

Which is true for a wave? (here n = frequency, T = time period).