JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 18 March 2021, Shift 2, Physics Q10

Question 10 of 90 in this shift, Physics question 10 of 30, Section A.

The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is

\vec{L}

. The magnitude of the areal velocity of the planet is :

(1) $\frac{L}{M}$
(2) $\frac{L}{2M}$ Official answer
(3) $\frac{2L}{M}$
(4) $\frac{4L}{M}$

Official answer

Option 2

NTA final key.

Chapter: Gravitation
Topic: Orbital Mechanics
Idea tested: Areal Velocity and Angular Momentum

Same idea in other shifts

Asked 4× 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.