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Length of a string tied to two rigid sup...

Length of a string tied to two rigid support is `40cm`. Maximum length (wavelength in cm) of a stationary wave produced on it is

A

(a) `20`

B

(b) `80`

C

( c ) `40`

D

(d) `120`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) This will happen for fundamental mode of vibration as shown in the figure. `S_(1) and S_(2)` are rigid support
Here `(lambda)/(2) = 40` :. `lambda = 80 cm`
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