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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
- An interference pattern was made by using red light. If the red light
- An ideal black body is equivalent to
- Two bodies A and B have masses 20 Kg and 5 Kg respectively. Each one is acted
- The range of voltmeter is 10V and its internal resistance is 50Ω.
- ₉₂U²³⁵ undergoes successive disintegrations with the end product of ₈₂P²⁰³
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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