The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz....

PHYSICS

JAMB 1995

The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz?

A. 7500m
B. 300m
C. 75m
D. 15m

Correct Answer: B. 300m

Explanation

\(\lambda\)₁F₁ = \(\lambda\)₂F₂

1500 x 200000 = 1000000 x \(\lambda\)₂

\(\lambda\)₂ = 300m

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