JEE Main 2026 — Gravitation Question with Solution
JEE Main 2026 (02 April Shift 1)
Question
A planet is moving around the star of mass in the orbit of radius . Another planet is moving around another star of mass in a orbit of radius . Ratio of time periods of revolution of and is _______.
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Using Kepler's third law, the time period of revolution of a planet is given by .
For planet , the orbital radius is and the mass of the star is :
For planet , the orbital radius is and the mass of the star is :
Taking the ratio of and :
Answer:
For planet , the orbital radius is and the mass of the star is :
For planet , the orbital radius is and the mass of the star is :
Taking the ratio of and :
Answer:
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This is a previous-year question from JEE Main 2026, 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.