Electromagnetic waves with wavelength
(i) `lambda_(1)` is used in satellite communication.
(ii) `lambda_(2)` is used to kill germs in water purifies.
(iii) `lambda_(3)` is used to detect leakage of oil in underground pipelines.
(iv) `lambda_(4)` is used to improe visibility in runways during fog and mist conditions.
Identify and name the part of electromagnetic spectrum to which these radiations belong.

Explanation

(i) In satellite communication microwaves are used so `lambda_(1)` is wavelength of microwave.
(ii) Ultraviolet radiation are used to kill germs in water purifier so `lambda_(2)` is wavelength of UV rays.
(iii) X - rays are used to detect leakage of oil in underground pipelines so `lambda_(3)` is X - rays.
(iv) Infrared rays are used to improve visiblity on runways during fog and mist condition so `lambda_(4)` is infrared rays.