Question

explain diff types of radiowaves​

Answer 1

Explanation:

Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios. ... The common designations are radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma-rays.

Answer 2

Practical radio systems mainly use three different techniques of radio propagation to communicate: Line of sight: This refers to radio waves that travel in a straight line from the transmitting antenna to the receiving antenna. ... This is the only method of propagation possible at frequencies above 30 MHz.