NDA General Ability Question (2025) — Solution

Step-by-step solution

Work done by a force is given by the dot product of force and displacement vectors. W = F s = F s where is the angle between the force vector F and the displacement vector s . For work done to be zero, must be zero, which implies = 90^ . Thus, the work done is zero when the displacement of the object is in a direction perpendicular to the direction of the force. Answer: is in perpendicular direction of the direction of force