Two open organ pipes of lengths 60 cm and 90 cm resonate at 6 th and 5 th harmonics respectively. The difference of frequencies for the given modes is _______ Hz . (Velocity of sound in air = 333 m /

Question

Two open organ pipes of lengths 60 cm and 90 cm resonate at 6 th and 5 th harmonics respectively. The difference of frequencies for the given modes is _______ Hz . (Velocity of sound in air = 333 m / s )

TestHub · Accepted Answer

The difference in frequency in open organ pipe = ​ f = 2 L nv ​ Δ f = 2 × 0.6 6 v ​ − 2 × 0.9 5 v ​ v = 333 m / s Δ f = 740 Hz ​

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