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Sound wave from a source A, follows two ...

Sound wave from a source A, follows two paths AOB and APQB in a tube as shown in figure. For silence at B, possible wavelength of sound will be

A

`3l/5`

B

2l/5

C

5l/7

D

8l/3

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AAKASH INSTITUTE ENGLISH-MOCK TEST 7-Exercise
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