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Question

An air column closed at one end and open at the other end resonates with a tuning fork when 45 and 99 cm of length. The wavelength of the sound in air column is

A
36 cm
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B
54 cm
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C
108 cm
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D
180 cm
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Solution

The correct option is B 108 cm
λ2=9945=54cm or λ=108cm

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