the vividh bharati station of All india Radio, Delhi , broadcasts on a frequency of 1,368 kHz (kilo hertz). Calculate the wavelength of the electromagnetic radiation emitted by transmitter . Which part of the electromagnetic spectrum does it belong to

Explanation

Wavelength, `lamda = (c)/(v)`
Substituting `= c = 3 xx 10^(8) ms^(-1) and v = 1368 kHz` (Given)
`= 1368 xx 10^(3) "cycles" s^(-1) " " (1 kHz = 10^(3) " cycles " s^(-1))`
`= 1368 xx 10^(3) s^(-1)`
We have, `lamda = (3 xx 10^(8) ms^(-1))/(1368 xx 10^(3) s^(-1)) = 219.3m`
It belongs to the radiowave region of the electromagnetic spectrum.