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प्रश्न
Answer the following in short.
What do you understand by the term efficiency of a machine’?
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उत्तर
The ratio of the work done by the machine to the work done on the machine is called the efficiency of a machine
Efficiency = `"Output energy"/"Input energy"`
[Work done by a machine is called the output energy and the work done on a machine is called the input energy.]
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