Q.

In a medium in which a transverse progressive wave is travelling, the phase difference between the points with a separation of 1.25 m is π/4. If the frequency of wave is 1000 Hz, the velocity in the medium is 

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a

104  ms1

b

125  ms1

c

10  ms1

d

100  ms1

answer is A.

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Detailed Solution

Δϕ=2πλ.Δx

and λ=Vn

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