JEE Main 2018 — Gravitation Question with Solution
From: JEE Main 2018 (Online) 15th April Morning Slot
Question
A body of mass m is moving in a circular orbit of radius R about a planet of mass M. At some instant, it splits into two equal masses. The first mass moves in a circular orbit of radius and the other mass, in a circular orbit of radius . The difference between the final and initial total energies is :
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Initially gravitational potenrial energy
Ei =
Final gravitational potential energy
Ef =
=
=
=
Required difference in energies
=
=
=
Ei =
Final gravitational potential energy
Ef =
=
=
=
Required difference in energies
=
=
=
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This is a previous-year question from JEE Main 2018, 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.