Physics Exam Prep
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Physics Exam Prep
This exam covers key concepts in kinematics, electric fields, and forces. Students should be familiar with the equations of motion, electric field intensity in charged spheres, and the principles governing projectile mot...
Sample questions with model answers
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Two trains one of length 100 m and another of length 125 m, are moving in mutually opposite directions along parallel lines, meet each other, each with speed 10 m/s. If their acceleration are 0.3 m/s² and 0.2 m/s² respectively, then the time they take to pass each other will be
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10 s
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A sphere of radius r has electric charge uniformly distributed in its entire volume. At a distance d from the centre inside the sphere (d < r) the electric field intensity is directly proportional to
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d
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A rocket is fired upward from the earth's surface such that it has an acceleration of 19.6m/sec². If after 5 sec its engine is switched off, the maximum height the rocket from earth's surface would be (g = 9.8m/sec²)
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490 m
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The electric field at 2R from the centre of a uniformly charged non-conducting sphere of radius R is E. The electric field at a distance R/2 from the centre will be
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Zero
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