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The end correction of a resonance column...

The end correction of a resonance column is 2.0 cm. If the shortest length resonating with the tuning fork is 20.0 cm , the next resonating length will be

A

31 cm

B

45 cm

C

50 cm

D

64 cm

Text Solution

Verified by Experts

The correct Answer is:
D
As `(lambda)/(4)=l_(1)+e` and `(3lambda)/(4)=l_(2)+e`
`rArr (l_2+e)/(l_1+e)=3`
`rArr l_(2)=3l_(1)+2e=3xx20+2xx2=64cm`
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