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physics objective Questions and Answers with explanation and solutions

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Physics - Work Energy power and collision Questions and Answer >>

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1. Work done in raising a box depends on

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2. When work is done on a body by an external force, its

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3. A 50kg man with 20kg load on his head climbs up 20 steps of 0.25m height each. The work done in climbing is . [JIPMER 2002]

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4. A spring when stretched by 2 mm its potential energy becomes 4 J. If it is stretched by 10 mm, its potential energy is equal to. [BCECE 2003]

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5. You lift a heavy book from the floor of the room and keep it in the book-shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon . [MP PET 1993]

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