What is the frequency of a radio wave of wavelength 150m if the velocity of...
PHYSICS
WAEC 1997
What is the frequency of a radio wave of wavelength 150m if the velocity of radio waves in free space is 3 x \(10^8ms^{-1}\)?
- A. 4.5 x \(10^{10}\)Hz
- B. 5x \(10^{9}Hz\)
- C. 4.5 x \(10^{8}Hz\)
- D. 2 x \(10^{6}Hz\)
Correct Answer: D. 2 x \(10^{6}Hz\)
Explanation
V=f\(\lambda, f =\frac{v}{\lambda}= \frac{3\times10^8}{150}\Rightarrow 2\times10^6\)Hz
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