A radio station is broadcasting programmes as `100` MHz frequency if the distance between the ratio station and the received set is `300` km how long the signal would take in reach the set from the radio station ? Also calculate the wavelength and wavelength of radio waves

Explanation

All electromagnetic waves travel in wacuum or air with the same speed of `3 xx 10^(6) m s^(-1)`
Time taken by wave to reach the reciver
`= (Destance)/(Time) `
`= (300 xx 1000m)/(3 xx 10^(8) ms^(-1)) = 1 xx 10^(-8)s `
Wavelength of radition
`lambda = (c )/(v) = (3 xx 10^(8) m s^(-1))/(100 xx 10^(6) s^(-1)) = 3 m`
Wavelength `bar v = (1)/(lambda)= (1)/(3) = 0.33 m^(-1)`