MCQ

M3292 · [1]
A projectile is launched vertically from the surface of a planet of radius R with a speed equal to half the escape speed. Air resistance is negligible. What is the maximum distance of the projectile from the centre of the planet?
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A positive point charge is isolated in space. A test charge is moved along one complete equipotential surface around the point charge. What is the shape of the equipotential sur...
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