| ⇦ | 
| ⇨ |
The escape velocity of a body from earth’s surface is Ve. The escape velocity of the same body from a height equal to 7R from earth’s surface will be
Options
(a) Ve/√2
(b) Ve/2
(c) Ve/2√2
(d) Ve/4
Correct Answer:
Ve/2√2
Explanation:
Escape velocity of body from the earth’s surface is Ve=√2gR
Escape velocity of a same body at a height h from the earth’s surface is,Ve’=√2gR²/R+h
Given h=7R
Ve’=√2gR²/R+7R ⇒ √2gR²/R[1+7]
=√2gR/8 ⇒ 1/2√2 √2gR
=1/2√2 Ve.
Related Questions: - The ultimate individual unit of magnetism in any magnet is called
- A force F=ai+3j+6k is acting at a point r=2i-6j-12k. The value of α for
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- An engine pumps water continuously through a hose. Water leaves the hose
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The ultimate individual unit of magnetism in any magnet is called
- A force F=ai+3j+6k is acting at a point r=2i-6j-12k. The value of α for
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- An engine pumps water continuously through a hose. Water leaves the hose
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