An object is vibrating 3000 times in 1 min. If the velocity of sound in air is 350 m/s, find the (i) Frequency in hertz (ii)wavelength of sound
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An object is vibrating 3000 times in 1 min. If the velocity of sound in air is 350 m/s, find the (i) Frequency in hertz (ii)wavelength of sound
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Answer:
1) No. of vibration :- 3000
time taken for vibration:- 1min = 60 sec
frequency (v) =
= 50 Hz
2) velocity of the wave
v = 350 m/sec
frequency = 50 Hz
using the formula
v =Λ λ
wavelength λ = v/v
350/50 = 7m