JEE Main 2021 — Gravitation Question with Solution
From: JEE Main 2021 (Online) 25th February Evening Shift
Question
The initial velocity vi required to project a body vertically upward from the surface of the earth to reach a height of 10R, where R is the radius of the earth, may be described in terms of escape velocity ve such that . The value of x will be ____________.
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Show full solutionCorrect answer: 10
Correct answer
10
Step-by-step explanation
Here R = radius of the earth
From energy conservation
{ escape velocity }
Then the value of x = 10
From energy conservation
{ escape velocity }
Then the value of x = 10
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This is a previous-year question from JEE Main 2021, covering the Gravitation chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.