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Q.

When a vibrating tuning fork of frequency 512 Hz is held above the mouth of a resonance tube of adjustable length, the first
two successive position of resonance occur when the lengths of the air column are 15.4 cm and 48.6 cm respectively. Then the
velocity of sound is nearly: 

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a

300 ms-1

b

320 ms-1

c

340 ms-1

d

250 ms-1

answer is A.

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Detailed Solution

V=2fl2−l1

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