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Given frequency of source f=100Hz,v(s)=2...

Given frequency of source f=100Hz,`v_(s)=20m//s `and `v=330 m//s. The beat frequencies `f_(1)` and `f_(2) are

A

a.`f_(1)=20Hz`

B

b. `f_(2)=10Hz`

C

c. both(a) and (b) are wrong

D

d.both (a) and (b) are correct

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The correct Answer is:
C
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