Question

The wavelength of a radio wave is 1.0 m find its frequency

Answer 1

Given: the wavelength of the radio wave, λ = 1.0 m

To Find: the frequency of radio wave, f.

Solution:

To calculate the frequency, the formula used:

• speed of radio wave, c = frequency /wavelength of radio wave

• c = f x λ

Here, the speed of a radio wave, c = 3 x 10⁸m/s, is the same as that of the speed of light, and the radio wave is an electromagnetic wave it travels at the same speed as that of light.

Applying the formula-

3 x 10⁸= f x 1.0

f = 3 x 10⁸/1

f = 3 x 10⁸ Hz

Hence, frequency of radio wave is 3 x 10⁸ Hz.