Work is said to be done when:

(i) a force should act on an object, and (ii) the object must be displaced.

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(i) no force should act on an object, and (ii) the object must be displaced.

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(i) a force should act on an object, and (ii) the object must not be displaced.

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(i) no force should act on an object, and (ii) the object must not be displaced.

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Solution

The correct option is A (i) a force should act on an object, and (ii) the object must be displaced.
Work is done whenever the given condition is satisfied:
(i) A force should act on an object
(ii) There is a displacement of the body caused by the applied force along the direction of the applied force.

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