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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 series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
- Shearing stress causes change in
- If liquid level falls in a capillary then radius of capillary will be
- When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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