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The height of a waterfall is 84 metre . ...

The height of a waterfall is 84 metre . Assuming that the entire kinetic energy of falling water is converted into heat, the rise in temperature of the water will be (`g=9.8 m//s^(2),J=4.2` joule / cal)

A

`42^(@)C`

B

`49^(@)C`

C

`0.49^(@)C`

D

`4.9^(@)C`

Text Solution

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The correct Answer is:
C
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