When a body moves to and fro about a point its motion is called:

The distance between two consecutive compressions or rarefactions in longitudinal waves is called:

Which of the following is not processing:

A device which has two ways communication is:

Sound waves having frequency lower than 20 Hz are called:

Which instrument measures the potential difference:

The S.I unit of potential difference is:

The output of a NAND gate is 0 when:

Eight bits combine to form:

An example of input device of computer is.

The half life of radium 226 is

The branch of applied physics which deals with the behaviour of electrons using different devices for various useful purposes Is