Physics, asked by poonamverma031975, 8 months ago

please Answer
I will mark brainlist if it is correct please fast but don't copy from Google please tell​

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Answered by desaipreet2105
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Answer:

1) A machine cannot be 100 percent efficient because some part of energy it loses in another form. For.e.g. Fan do not convert  100 percent electrical energy in rotational energy, as it also release heat.

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