Q33. What will be the wavelength of ultrasonic waves in air if the frequency of the waves is 30
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Frequency of sound, f = x
Speed of sound, v = 340 m /s
Wave length, l = 1.4 km = 1400 m
As we know that ,
v = fl
340 = x ( 1400)
x = 340/1400
x = 34/140
x = 1.7/ 7
x = 0.24 Hz
Speed of sound, v = 340 m /s
Wave length, l = 1.4 km = 1400 m
As we know that ,
v = fl
340 = x ( 1400)
x = 340/1400
x = 34/140
x = 1.7/ 7
x = 0.24 Hz
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