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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. A man pushes a wall and fails to displace it. He does . [CPMT 1992]


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2. A ball is released from the top of a tower. The ratio of work done by force of gravity in first, second and third second of the motion of the ball is . [Kerala PET 2005]


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


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4. The kinetic energy acquired by a body of mass m is travelling some distance s, starting from rest under the actions of a constant force, is directly proportional to . [Pb. PET 2000]


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5. 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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