Question on: WAEC Physics - 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 \(10^{7}Hz\)
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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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