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If the water falls from a dam into a tur...

If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine is `(g=9.8m//s^(2))`

A

9.8 m//s

B

19.6 m/s

C

39.2 m/s

D

98.0 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
Potential energy of water = kinetic energy at turbine
`mgh = (1)/(2)mv^(2)rArr v =sqrt(2gh)=sqrt(2xx9.8xx19.6)=19.6 m//s`
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