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A long glass tube is held vertically in water. A tuning fork is struck and held over the tube. Strong resonances are observed at two successive lengths 0.50 m and 0.84 m above the surface of water. If velocity of sound is 340 m s–1, then the frequency of the tuning fork is 

(a) 128 Hz 

(b) 256 Hz 

(c) 384 Hz 

(d) 500 Hz

1 Answer

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Best answer

Correct option (d)

Explanation:

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