Physics Exam Prep
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What you'll study, topic by topic
Physics Exam Prep
This exam covers topics in kinematics, electric fields, and projectile motion. Key concepts include the behavior of objects under acceleration, the properties of electric fields in charged spheres, and the dynamics of mo...
Sample questions with model answers
Every question in the paper gets a full exam-length answer in the app — organised by marks, the way a topper writes it.
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 19.6 m/sec². If after 5 sec its engine is switched off, the maximum height the rocket from earth's surface would be (g = 9.8 m/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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