31. Direct conversion of solar energy with the use of a photovoltaic cell result in the production of
32. A porter raise 12 kg object from surface of earth and put object 1.5 meter above from surface on his head. Calculate the work done on object (g = 10 ms-2).
33. When a person walks 4 meters with a constant force of 12N, the work done by him is-
34. Fill in the blank with the correct option. An object is thrown vertically upward during their rise up potential energy and kinetic energy is-
35. When an object of 11kg is placed at a height of 8m from the ground, then how much energy it will contains?
36. How is the kinetic energy of a moving object affected if the net work done on it is positive?
37. A force of 20 N is applied to an object and it accelerates with an acceleration of 2 m/sec2. Calculate the mass of the object.
38. An object with a mass of 100 kg is accelerated uniformly with a velocity of 5 ms-1 to 17 ms-1 in 6s. The magnitude of the force exerted on an object is . . . . . . . .
39. The work is product of-
40. The effect of stress depends on which of the following?
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