A radio station broadcasts at 700 kHz. If the radio waves travel at a velocity of `3 xx 10^(8) ms^(-1)`. calculate the wavelength of the radio wave.

Explanation

We are given:
Frequency of wave = 700 kHz = `700 xx 10^(3)` Hz
Velocity of wave = `3 xx 10^(8) ms^(-1)`.
We are to calculate, wavelength (`lambda`) of the radio wave
Using relation, `v = c/lambda rArr lambda =c/v =(3 xx 10^(8))/(700 xx 10^(3)) = 0.43 xx 10^(3) = 430 m`