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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
- Two coils of self inductance 2 mH and 8 mH are placed so close together
- The horizontal and vertical components of earth’s magnetic field at a place
- A coil of resistance 10 Ω and an inductance 5 H is connected to a 100 volt
- What determines the nature of the path followed by the particle?
- A deutron is bombarded on ₈O¹⁶ nucleus and α-particle is emitted. The product nucleus is
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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