# What is the frequency of a radio wave of wavelength 150m if the velocity...

Question 493
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 $$10^{6}Hz$$
##### Explanation
V=f$$\lambda, f =\frac{v}{\lambda}= \frac{3\times10^8}{150}\Rightarrow 2\times10^6$$Hz

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