Waves - Result Question 17

17. 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: 17. (c)

Solution:

  1. (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 $(\lambda)=\frac{v}{f}=\frac{960}{60}=16 m$.