JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 1 February 2024, Shift 2, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

A light planet is revolving around a massive star in a circular orbit of radius R with a period of revolution T. If the force of attraction between planet and star is proportional to

R^{-3/2}

then choose the correct option :

(1) $T^2 \propto R^3$
(2) $T^2 \propto R^{7/2}$
(3) $T^2 \propto R^{5/2}$ Official answer
(4) $T^2 \propto R^{3/2}$

Official answer

Option 3

NTA final key.

Chapter: Gravitation
Topic: Orbital Mechanics
Idea tested: Kepler's Laws

Same idea in other shifts

Asked 7× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.