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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
- When alpha particles captures and electron, then it becomes a
- Electric field intensity at a point in between two parallel sheets due to like
- The difference in the variation of resistance with temperature in a metal
- The primary of a transformer when connected to a dc battery of 10 volt draws a current
- In the Young’s double slit experiment, the intensity of light at a point on the screen
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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