When a force is parallel to the direction of motion of the body, then work done on the body is_____________________? April 17, 2025 by admin A. zero B. minimum C. infinity D. maximum
If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________? April 17, 2025 by admin A. 38.2 J B. 392.1 J C. 39.2 J D. 3.92 J
The average power and instantaneous power become equal if work is done at __________________? April 17, 2025 by admin A. any rate B. at variable rate C. at uniform rate D. at high rate
Proton electron neutron and a particles have same momentum. Which of them have highest K.E ? April 17, 2025 by admin A. Proton B. electron C. neutron D. a-particle
Work done by variable force is determine by dividing____________________? April 17, 2025 by admin 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
The escape velocity of a body in gravitational field of earth is independent of__________________? April 17, 2025 by admin A. its mass B. the angle at which it is thrown C. both its mass and the angle at which it is thrown D. gravitational field of earth
The source of geothermal energy is___________________? April 17, 2025 by admin A. decay of radioactive element in the earth B. compression of material in the earth C. residual lost of the earth D. all as said in A – B and C
Work done by the force of friction is____________________? April 17, 2025 by admin A. always positive B. always negative C. positive only for small frictional force D. positive only for large frictional force
If velocity is doubled then__________________? April 17, 2025 by admin 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 constant D. momentum increases 2 times and K.E increases 4 time
Which of the following is not conservative force_________________? April 17, 2025 by admin A. friction B. electric C. gravitational D. magnetic
