Radio
(Qamar Shahzada, Ghujranwala)
The Radio is a electronic devic.which receive
the waves of diffirent frequincey.By the Frequencey the radio change its
chennel.The radio was disscovered by Markoni.the radio is a device for send any
message from one place to another by the air waves.radio has thw bands Fm &
Am.in pakistan the Fm band is used at the city lavels but Am band is used at
national lavel.