Wave Mechanics Question 837

Question: What will be the wave velocity, if the radar gives 54 waves per min and wavelength of the given wave is 10 m

[RPET 2000]

Options:

A) 4 m/sec

B) 6 m/sec

C) 9 m/sec

D) 5 m/sec

Show Answer

Answer:

Correct Answer: C

Solution:

$ n=\frac{54}{60}Hz,,\lambda =10,m $

Therefore $ v=n\lambda =9,m/s $ .