Waves Ques 11
11. The speed of a wave in a medium is $960 m / s$. If 3600 waves are passing through a point in the medium in $1 min$., then the wavelength of the wave is
[1997]
(a) $8 m$
(b) $12 m$
(c) $16 m$
(d) $20 m$
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Answer:
Correct Answer: 11.(c)
Solution:
- (c) Given speed of wave $(v)=960 m / s$
Frequency of wave $(f)=3600 / min$
$=\frac{3600}{60} rev / sec=60 rev$ per sec.
Wavelength of waves $(\lambda)=\frac{v}{f}=\frac{960}{60}=16 m$.
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