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A body of mass 5 kg falls from a height ...

A body of mass 5 kg falls from a height of 20 metres on the ground and it rebounds to a height of 0.2 m. If the loss in potential energy is used up by the body, then what will be the temperature rise? `("specific heat of material = 0.09 cal gm"^(–1@)"C"^(–1))`

A

`0^(@)"C"`

B

`4^(@)"C"`

C

`8^(@)"C"`

D

none of these

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