Which of the following is not conservative force_________________? A. friction B. electric C. gravitational D. magnetic

If velocity is doubled then__________________? A. momentum increases 4 times and K.E increases 2 times B. momentum and K.E. remain same C. momentum increases 2 times and K.E increases constantD. momentum increases 2 times and K.E increases 4 time

Work done by the force of friction is____________________? A. always positiveB. always negative C. positive only for small frictional force D. positive only for large frictional force

The source of geothermal energy is___________________? A. decay of radioactive element in the earth B. compression of material in the earth C. residual lost of the earthD. all as said in A – B and C

The escape velocity of a body in gravitational field of earth is independent of__________________? A. its mass B. the angle at which it is thrownC. both its mass and the angle at which it is thrown D. gravitational field of…

Work done by variable force is determine by dividing____________________? A. force into small intervalB. displacement into small interval C. both force and displacement into small intervals D. force into small and displacement into large intervals

Proton electron neutron and a particles have same momentum. Which of them have highest K.E ? A. ProtonB. electron C. neutron D. a-particle

The average power and instantaneous power become equal if work is done at __________________? A. any rate B. at variable rateC. at uniform rate D. at high rate

If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________? A. 38.2 J B. 392.1 JC. 39.2 J D. 3.92 J

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. infinityD. maximum