Question
What do you understand by the term ‘efficiency of a machine’?
✓
Answer
The ratio of the work done by the machine to the work done on the machine is called efficiency of a machine
Efficiency $=\frac{\text { Output energy }}{\text { Input energy }}$
[Work done by a machine is called the output energy and the work done on a machine is called the input energy.]
Efficiency $=\frac{\text { Output energy }}{\text { Input energy }}$
[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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