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Physics of Sound

  1. 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​​
    1. 8 m
    2. 12 m
    3. 16 m
    4. 20 m
Correct Option: C

Given speed of wave (v) = 960m/s
Frequency of wave (f) = 3600/min

=
3600
= rev/sec = 60 rev per sec.
60

Wavelength of waves (λ) =
v
=
960
= 16m
ƒ60

[Alt : λ =
ct
,
w

where c = velocity of wave
t = time in second
w = no. of waves]



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