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Stationary waves are produced in a stret...

Stationary waves are produced in a stretched string of length 120 c. if the string vibrats with 6 segment and if the frquency of vibration of the string is 20 Hz. Then the velocity of waves on the string is

A

`2 m//s`

B

`4 m//s`

C

`6 m//s`

D

`8 m//s`

Text Solution

Verified by Experts

The correct Answer is:
D
Length of one segment ` = 20 cm = lambda/2`
` :. lambda = 40 ` cm
` :. V = n lambda = 20 xx 0.4 = 8` m/s.
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