Work done will be maximum if the angle between the force F and displacement d is______________________?

Related Mcqs:

1. The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?

   A. 0°
   B. 45°
   C. 90°
   D. 180°

2. The area under the force displacement graph represents__________________?

   A. area
   B. work done
   C. power
   D. none of these

3. When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

   A. zero
   B. minimum
   C. infinity
   D. maximum

4. Work done by variable force is determine by dividing____________________?

   A. force into small interval
   B. displacement into small interval
   C. both force and displacement into small intervals
   D. force into small and displacement into large intervals

5. Work done by the force of friction is____________________?

   A. always positive
   B. always negative
   C. positive only for small frictional force
   D. positive only for large frictional force

6. For what displacement the P.E becomes 1/4 of its maximum value ?

   A. x = x’
   B. x = x’/2
   C. x = x’/4
   D. x = x(2)’/2

7. A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2

   A. 22N
   B. 16N
   C. 20N
   D. 4N

   Submitted by: Huzaifa Naseer

8. The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________?

   A. 30°
   B. 45°
   C. 60°
   D. 180°

9. Two identical metal balls with charges + 2Q and – Q are separated by some distance, and exert a force F on each other. They are joined by a conducting wire, which is then removed. The force between them will now be_________?

   A. F
   B. F/2
   C. F/4
   D. F/8

   Submitted by: Tauseef Ali

10. What is the value of the current in a wire of 10cm long at the right angle to a uniform magnetic field of 0.5 Weber/m2 when the force acting on the wire is 5N ?

    A. 1A
    B. 10A
    C. 100A
    D. 1000A