Question

Calculate the broadcast wavelength of the radio station 99.90 fm. seconds

Answer 1

The radio waves are electromagnetic wave, so it travels with velocity of light i.e
`3* 10^(8) \ m/s`.

We can use the relation between frequency, wavelength and speed as

`\lambda =(c)/(f)`

Here c is speed of light,
`\lambda` is wavelength and f is frequency and its value is given 99.90 FM, it is actually in megahertz (i.e 99.90 MHz).

Therefore,

`\lambda =(3 * 10^(8)\ m/s )/(99.90 * 10^(6) \ Hz) = 3.003 \ m`.

Thus, the broadcast wavelength of the given radio station is 3.003 m.