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An air column, closed at one end and ope...

An air column, closed at one end and open at the other resonates with a tuning fork when the smallest legnth of the column is 50 cm. The next larger length of the column resonating with the same tuning fork is

A

150 cm

B

200 cm

C

66.7 cm

D

100 cm

Text Solution

Verified by Experts

From figure,

First harmonic is obtained at `l=(lambda)/(4)=50cm`
Third harmonic is obtained for resonance,
`l.=(3lambda)/(4)=3xx50=150cm`.
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