| ⇦ | 
| ⇨ |
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: - In the Davisson and Germer experiment, the velocity of electrons emitted from the
- A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale
- Three identical spheres, each of mass 3 kg are placed touching each other
- Which of the following particles will have minimum frequency of revolution
- which of the following can not be emitted by radioactive substances during their decay?
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In the Davisson and Germer experiment, the velocity of electrons emitted from the
- A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale
- Three identical spheres, each of mass 3 kg are placed touching each other
- Which of the following particles will have minimum frequency of revolution
- which of the following can not be emitted by radioactive substances during their decay?
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