## To Calculate The Speed Of Radio Wave

Radio waves are the large spectrum waves that can be transmitted from transmitters and received from the receivers. They have frequency ranging from 300 GHz to as low as 3 kHz.

Speed of Wave = Wavelength X Frequency

Where,

Speed of radio waves is as similar to electromagnetic waves = 2.997\times 10^{8}\,m/s\)

Usually the frequencies of radio waves are in the range of 88~108 MHz

Typically between

$3.14\times 10^{9} \sim 2.78\times 10^{9} nm$

#### Practise This Question

A bowling ball is thrown down the alley in such a way that it slides with a speed v0 initially without rolling. What will it it's speed be when (and if) it starts pure rolling? The transition from pure sliding to pure rolling is gradual, so that both sliding and rolling takes place during this interval.