Question

In not less than 100 words ,write a composition on topic radio.

Answer 1

Answer : Radio is a way to send electromagnet signals over a long distance, to deliver information from one place to another. A machine that sends radio signals is called a transmitter, while a machine that "picks up" the signals is called a receiver or antenna. A machine that does both jobs is a "transceiver". When radio signals are sent out to many receivers at the same time, it is called a broadcast.

Television also uses radio signals to send pictures and sound. Radio signals can start engines moving so that gates open on their own from a distance. Radio signals can be used to lock and unlock the doors in a car from a distance..