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 \(10^{7}Hz\)
E
2 x \(10^{6}Hz\)
Verified Correct Answer: E.
Physical Principles & Numerical Solution
V=f\(\lambda, f =\frac{v}{\lambda}= \frac{3\times10^8}{150}\Rightarrow 2\times10^6\)Hz
Source: Myschool Past Questions Archive (Record #26306)