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The kinetic energy needed to project a body of mass m from the surface of earth (radius R) to infinity is
Options
(a) mgR/2
(b) 2mgR
(c) mgR
(d) mgR/4
Correct Answer:
mgR
Explanation:
The kinetic energy =1/2MVe²
The escape velocity Ve=√2gR
Ve²=2gR
= 2mgR/2
=mgR
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A student performs an experiment to determine the Young’s modulus of a wire
- A potentiometer circuit has been set up for finding the internal resistance of a given
- The apparent weight of the body of mass 10 kg when it is travelling upwards with
- Two identical thin plano-convex glass lenses (refractive index 1.5) each having
- Which one of the following is not due to total internal reflection?
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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