1.

Velocity of sound in air is 300 m/s. Then the distance between two successive nodes of a stationary wave of frequency 1000 Hz is :

Answer»

10 CM
20 cm
15 cm
30 cm

Solution :v = 300 `ms^(-1), "" v = 1000` HZ.
`lambda = (u)/(v) = (300)/(1000) = 0.3` m
`lambda` = 30 cm Now distance between two consecutive nodes is x = `(lambda)/(2) `.
x = `(30)/(2) = 15` cm
Hence the CORRECT chioce is (C).


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