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  4. A sound wave of frequency 'v' Hz initially travels a distance of 1 km in air. Then it gets reflected into a water reservoir of depth 600 m. The frequency of the wave at the bottom of the reservoir is (Vair = 340 m/s ; Vwater = 148 m/s)

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Q. A sound wave of frequency $'v'$ Hz initially travels a distance of $1\, km$ in air. Then it gets reflected into a water reservoir of depth $600\, m$. The frequency of the wave at the bottom of the reservoir is
$(V_{air} = 340 m/s ; V_{water } = 148 m/s)$

TS EAMCET 2017

Solution:

The frequency of sound wave remains constant