What is the efficiency of a machine that gives an output work of 400 J for an input work of 500 J?

Type: MCQ • Marks: 1

A. 80%

B. 100%

C. 50%

D. 125%

Explanation

Efficiency = (Output Work / Input Work) × 100 = (400 / 500) × 100 = 80%.

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Class 9th Science (MCQ)

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