| ⇦ | 
| ⇨ |
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: - A source of sound and a detector are moving along the same line with same speed
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- In a vaccum triode the function of grid voltage is
- The given graph represents V-I characteristic for a semiconductor device
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A source of sound and a detector are moving along the same line with same speed
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- In a vaccum triode the function of grid voltage is
- The given graph represents V-I characteristic for a semiconductor device
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