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Arrange the following electro-magnetic r...

Arrange the following electro-magnetic radiations in ascending order of their frequencies :
(i) Microwave
(ii) Radiowave
(iii) X-rays
(iv) Gamma rays.
Write two uses of any one of these.

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Given electromagnetic radiations in ascending order of their frequencies are Radiowave, Microwave , X-rays, Gamma rays.
Uses of Microwave :
(i) Microwaves are used in Radar system for aircraft navigation.
(ii) Microwaves are used in microwave ovens for cooking purpose.
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