JEE Main 2016PhysicsGravitationMediumMCQ

JEE Main 2016 — Gravitation Question with Solution

JEE Main 2016 (03 Apr)

Question

A satellite is revolving in a circular orbit at a height h from the earth's surface (radius of earth R; h << R ). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field, is close to (Neglect the effect of atmosphere.)

Choose an option

Show full solutionCorrect option: B
Correct answer
BgR 2-1

Step-by-step explanation

Since,  h << R ,

Ve=2gR

& V0=gR

∴The minimum increase in velocity required,

Ve-V0=2gR-gR

=2-1gR

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About this question

This is a previous-year question from JEE Main 2016, 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.