Question

Write any four characteristics of electromagnetic waves. Give two uses of each:- (a) radio waves (b) Microwaves​

Answer 1

Explanation:

Electromagnetic waves are transverse in nature as they propagate by varying the electric and magnetic fields such that the two fields are perpendicular to each other. ... Electromagnetic wave propagation does not require any material medium to travel. The inherent characteristic of an electromagnetic wave is its frequency.

• They are used in standard broadcast radio and television, shortwave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys. (For a fuller treatment, see electromagnetic radiation: Radio waves.)
• Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication, medical diathermy and cancer treatment, remote sensing, radio astronomy, particle accelerators, spectroscopy, industrial ...