Please solve
Q.25. Sound produced by a source of wavelength 114 m passes through a tube of given figure. What will be the minimum radius of the loop so that there is no sound detect by the machine placed at the junction B?


(1) 100 m
(2) 50 m
(3) 25 m
(4) 114 m

Dear studentThe equation of radius is given byr=λ2(π-2) substituting λ=114mr=1142(3.14-2)=1142.28=50mHence option (c) is correct.Regards

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