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Q.

In a certain situation, F→  and  S→ are not equal to zero but the work done is zero. From this, we conclude that

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a

F→  and  S→ are at right angles

b

F→  >  S→

c

F→  and  S→ are in the same direction

d

F→  and  S→ are in the opposite direction

answer is A.

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Detailed Solution

W = F S cos 90° = zero
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