A source of wave produces 40 crests and 40 troughs in 0.4second.Find the frequency of the wave.

The sound waves in air are

A bell vibrates 600 times within 3/2 seconds, its frequency and time period will be:

The distance between a compression and the next rarefaction of a longitudinal wave is

A baby cries with a frequency 712 Hz, if the speed of sound in air is 356m/s, the wavelength of sound is:

A wire of uniform cross-section and length of 7 m is fixed between two rigid points. If a stationary wave is set in it and made to vibrate with one loop, the wave length of vibration will be:

A siren has 16 holes and is making 960 revolutions per minute. The frequency of the sound produced by the siren is:

Which of the following is a mechanical wave?

Arrange in increasing order - Speed of sound in steel, in distilled water, in sea water and in oxygen.

Sound from a flute and sound from a harmonica played by passing air through musical instrument, at same time and same distance from ear and traveling through same medium air, they differ in sounds due to difference in