A man of 60 kg gains 1000 cal of heat by...

`A` man of `60` kg gains `1000` cal of heat by eating `5` mangoes. His efficiency is `29%`. To what height he can jump by using this energy?

`2m`

`20 m`

`28 m`

`0.2 m`

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The correct Answer is:

`"Efficiency" `xx` "energy=work done=mgh"`

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