Question

A radio station broadcasts its programme at 219.3 m wavelength. Determine the frequency of radio waves if velocity of radio waves 3 × 10⁸ m/s.

Answer 1

Velocity of radio waves v = 3 × 10⁸ m/s 

Wavelength of radio waves λ = 219.3 m 

∴ Frequency of radio waves v = \(\frac{v}{λ}\)

v = \(\frac{3 \times 10^8}{219.3}\)

 = 0.013679 x 10⁸

= 13679 x 10²

= 1.36 79 × 10³Hz

Frequency v = 1.3679 KHz