| ⇦ | 
| ⇨ |
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
Related Questions: - The condition under which a microwave oven heats up a food item containing
- Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- Which one of the following electrical meter has the smallest resistance?
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The condition under which a microwave oven heats up a food item containing
- Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- Which one of the following electrical meter has the smallest resistance?
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply