Question

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

Answer 1

the wavelength , `lambda` is equal to c/v , where c is the speed of electromagnetic radiation in vacuum and v is the frequency . Substituting the givnen values, we have
`lambda=c/v`
`(3.00xx10^(8)ms^(-1))/(1368kHz)`
`(3.00xx10^(8)ms^(-1))/(1368 xx 10^(3)S^(-1))`
219. 3m
this is a characteristic readiowave wavelength.