Guess the object which produces sound without vibrate itself.

If no part in this universe vibrates, then the consequence is

The required apparatus to prove that sound has energy are

How do you produce a feeble sound?

… contains three small bones.

A 30 dB sound is … times more powerful than the total silence.

Shrillness of sound appears in

All the human beings and animals are communicate their feeling by

The sound produced by near total silence is

Sound travel much faster in …

Tabala is an instrument of … type.

Flute is an instrument of … type.

Guitar is an instrument of … type.

… is the important organ in the human body to produce sound.

The intensity of sound of car horn is … dB.