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The work done is zero if
a. The body shows displacement in the opposite direction of the force applied.
b. The body shows displacement in the same direction as that of the force applied.
c. The body shows a displacement in perpendicular direction to the force applied.
d. The body masses obliquely to the direction of the force applied.
The work done is zero if the body shows a displacement in the perpendicular direction to the force applied.
Thus, option c is correct.
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