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Question

If a force acts on a body but no displacement occurs, the work done is:

This question was previously asked in
RRB NTPC 2025 Graduate Level CBT 1 Question Paper (25-Mar-2026) (Shift 3)
The correct answer is

Zero

Work is defined as the product of force and the displacement in the direction of the force: \(W = F \times s \times \cos\theta\).

If the body does not move, the displacement \(s = 0\).

Substituting, \(W = F \times 0 = 0\), regardless of how large the force is.

Hence, when there is no displacement the work done is zero.

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