Answers

2016-04-09T16:46:23+05:30
For the given radio-wave,

velocity, v = 3 * 10⁸ m/s
wavelength, λ = 420.5 m
frequency, f = (?)

We know that,
v = λf
∴ 3 * 10⁸ = 420.5 * f
∴(3 * 10⁸) /420.5 = f
∴f = 7.13 * 10⁵ Hz (approx.)
f = 7.13 * 10² kHz

0