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प्रश्न
Define the term efficiency of a machine.
With reference to machines define the following term:
Efficiency of 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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