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A turning fork of frequency 600Hz is sounded over a closed r...

A turning fork of frequency 600Hz is sounded over a closed resonance tube. If the first and second resonant positions are 0.130m and 0.413m respectively, calculate the speed of sound in air

A.

508.4ms-1

B.

480.0ms-1

C.

339.6ms-1

D.

169.8ms-1

Correct answer is C

v=fλ

v=2f×(l2l1)

v=2×600×(0.4130.130)

v=1200×0.283

v=339.6ms1