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What is the frequency of a radio wave of wavele... - WAEC Physics 1997 Question

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 \(10^{7}Hz\)
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Correct Option: E

V=f(\lambda, f =\frac{v}{\lambda}= \frac{3\times10^8}{150}\Rightarrow 2\times10^6)Hz

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