A tuning fork vibrates with a frequency of 256 Hz . Taking the speed of sound to be 345 . 6 m s - 1 in the air, find the wavelength and the distance, which the sound travels during the time, fork makes 60 vibrations.

Question

A tuning fork vibrates with a frequency of 256 Hz . Taking the speed of sound to be 345 . 6 m s - 1 in the air, find the wavelength and the distance, which the sound travels during the time, fork makes 60 vibrations., 1 . 35 m , 81 m, 1 . 40 m , 84 m, 1 . 45 m , 87 m, 1 . 55 m , 93 m

MARKS App · Accepted Answer

Here, f = 256 Hz ; υ = 345 .6 m s − 1 ∴ λ = υ f = 345.6 256 = 1 .35 m In one cycle, sound advances by distance λ Therefore, the required distance travelled by sound, S = 60. λ = 81 m

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