Under what condition is the work done by a force zero?

Type: MCQ • Marks: 1

A. When force is perpendicular to displacement (cos 90° = 0)

B. When displacement is zero

C. Both A and B

D. When force and displacement are in the same direction

Explanation

Work is zero if displacement is zero or if the force acts perpendicularly to displacement.

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Class 9th Science (MCQ)

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