A tunning fork of frequency 480 H z is used in an experiment for measuring speed of sound v in air by resonance tube method. Resonance is observed to occur at two successive lengths of the air column, l 1 = 30 c m and l 2 = 70 c m . Then, ν is equal to:

Question

A tunning fork of frequency 480 H z is used in an experiment for measuring speed of sound v in air by resonance tube method. Resonance is observed to occur at two successive lengths of the air column, l 1 = 30 c m and l 2 = 70 c m . Then, ν is equal to:, 384 m s - 1, 332 m s - 1, 338 m s - 1, 379 m s - 1

MARKS App · Accepted Answer

Speed of sound, v = 2 f l 2 - l 1 = 2 × 480 0.70 - 0.30 = 384 m / s

Search any question & find its solution

Looking for more such questions to practice?