No work is done by a force on an object if (a) the force is always perpendicular to its velocity (b) the force is always perpendicular to its acceleration (c ) the object is stationary but the point of application of the force moves on the object (d) the object moves in such a way that the point of application of the force remains fixed

No work is done by a force on an object if (a) the force is always pe

1.	No work is done by a force on an object if (a) the force is always perpendicular to its velocity (b) the force is always perpendicular to its acceleration (c ) the object is stationary but the point of application of the force moves on the object (d) the object moves in such a way that the point of application of the force remains fixed
Answer» B, C & d are correct a, b & d are correct a, c & d are correct all are correct Answer :C