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A bat emits ultrasonic sound a frequency 1000kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound, (b) the transmitted sound ? Speed of sound in air is `340ms^(-1)` and in water `1486ms^(-1)` |
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Answer» Here `V = 100 KHz = 10^(5) Hz, V_(a)= 340 m//s,V_(W) = 1486m//s^(-1)` Wavelength of reflected sound,` lambda _(a) = ( V^(a))/(V)` `= (340)/( 10^(5))= 3.4 xx 10^(-3) m ` Wavelenth of transmitted sound , `lambda_(w) =(V_(w))/(V) = (1486)/(10^(5)) =1.486 xx 10^(-2)` |
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