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In a resonance column first and second r...

In a resonance column first and second resonance
are obtained at depths `22.7` cm and `70.2` cm. The
third resonance will be obtained at a depth of

A

117.7cm

B

92.9cm

C

115.5cm

D

113.5cm

Text Solution

Verified by Experts

The correct Answer is:
A
`l_3=l_2 + lamda/2 " since " l_2-l_1 = lamda/2`
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