Identify the electromagnetic waves whose wavelengths lie in the range
(a) `10^(-11)m lt lambda lt 10^(-14)m`
(b) `10^(-4)m lt lambda lt 10^(-6)m`
Write one use of each.

Explanation

(a) `gamma-` rays have their wavelengths within the range `10^(-11)m lt lambda lt 10^(-14)m`. These rays are used for treatment of cancer and the technique is known as, .radio therepy..
(b) Infrared waves have their wavelengths within the range `10^(-4)m lt lambda lt 10^(-6)m`. These rays are widely used in the remote switches of household electronic gadgets such as TV sets, video recorders. Wi-Fi systems etc.