Identify electromagnetic waves which :
(i) are used in radar system.
(ii) affect a photographic plate.
(iii) are used in surgery.
Write their frequency range.

The waves used in radar systems are _______ waves.

The waves used in radar systems are _______ waves.

What are electromagnetic waves? Write two uses of radio waves?

Identify the part of the electromagnetic specturm which is (i) Suitable for radar systems used in aircraft nevigation (ii) Adjacent to the low frequency end of the electromagnetic spectrum (iii) produced in nuclear reaction (iv) produced by bombarding a metal target by high speed electrons.