Q301
Open questionCreation of something from nothing is against the law of
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Physics GK · all questionsWork, Energy and Power
Work, Energy and Power
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Q302
Open questionIn the force equation F is equal to-
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Q303
Open questionThe SI unit of mechanical energy is
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Q304
Open questionThe force of gravity acting on an object is known as . . . . . . . .
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Q305
Open questionAn object of 5.0 kg is raised to a height of 2 m, in this process, how much work was done- (g = 9.8m/s2)
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Q306
Open question900 × 106 J of energy is consumed in a month in a house. How much this energy is in the unit?
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Q307
Open questionThe kinetic energy of a moving object depends on-
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Q308
Open questionThe weight of an object is 980 N. If the gravitational acceleration is 9.8 ms-2, find the mass of the object-
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Q309
Open questionMatch the columns.
| Column I | Column II |
| a. In an electric heater | 1. Chemical energy is converted into heat energy |
| b. In an electric bulb | 2. heat energy is converted into mechanical energy |
| c. In burning of coal | 3. Electrical energy is converted into light energy |
| d. In steam engine | 4. Electrical energy is converted into heat energy |
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Q310
Open questionA cricket ball of mass 100g moving with a velocity of 30 m/s is stopped by a player in 0.05 seconds. The average force exerted by the player is-
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Q311
Open question. . . . . . . . is the interaction between two objects.
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Q312
Open questionWhich of the following statements is false?
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Q313
Open questionWhich of the following is a vector quantity?
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Q314
Open questionAn object of 10kg is moving at a speed of 5m/s. what will be the kinetic energy of object?
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Q315
Open questionFind the kinetic energy (in J) possessed by a body of mass 10kg moving with a velocity of 5 mls.
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Q316
Open questionWhat is the momentum of an object having mass of 14 kg and velocity 28 m/s?
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Q317
Open questionIn a collision, always saving of . . . . . . . .
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Q318
Open questionThe work done is zero with zero-
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Q319
Open questionThe water raised at a certain height has . . . . . . . . energy.
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Q320
Open question15 kg mass is moving with an acceleration of 5ms-2. So the force applied on it will be . . . . . . . .
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