In a resonance tube, using a tuning fork of frequency 325 Hz , two successive resonance length are observed as 25 . 4 cm and 77 . 4 cm respectively. The velocity of sound in air is

Question

In a resonance tube, using a tuning fork of frequency 325 Hz , two successive resonance length are observed as 25 . 4 cm and 77 . 4 cm respectively. The velocity of sound in air is, 338 m s - 1, 328 m s - 1, 330 m s - 1, 320 m s - 1

MARKS App · Accepted Answer

v = 2 n l 2 - l 1 = 2 × 325 77.4 - 25.4 c m s - 1 = 650 × 52 100 m s - 1 = 338 m s - 1

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