Wave Mechanics Question 72
Question: The speed of a wave in a medium is 760 m/s. If 3600 waves are passing through a point, in the medium in 2 minutes, then its wavelength is
[AFMC 1998; CPMT 2001]
Options:
A) 13.8 m
B) 25.3 m
C) 41.5 m
D) 57.2 m
Show Answer
Answer:
Correct Answer: B
Solution:
Frequency of wave is $ n=\frac{3600}{2\times 60},Hz $
Therefore $ \lambda =\frac{v}{n}=\frac{760}{30}=25.3 $ m.
BETA
