Learn

Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceOtherEasyConceptual

JEE Main 26 February 2021, Shift 1, Physics Q3

Question 3 of 90 in this shift, Physics question 3 of 30, Section A.

A planet revolving in elliptical orbit has : A. a constant velocity of revolution. B. has the least velocity when it is nearest to the sun. C. its areal velocity is directly proportional to its velocity. D. areal velocity is inversely proportional to its velocity. E. to follow a trajectory such that the areal velocity is constant. Choose the correct answer from the options given below :
  1. (1)A only
  2. (2)C only
  3. (3)D only
  4. (4)E onlyOfficial answer

Official answer

Option 4

NTA final key.

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

Same idea in other shifts

Asked 4× in all
  1. 7 Apr 2025, Shift 2 · Q31Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The radius…EasyAssertion–reason
  2. 25 Jul 2021, Shift 1 · Q19The minimum and maximum distances of a planet revolving around the Sun are x1x_1 and x2x_2. If the minimum speed of the planet on its…EasySingle correct
  3. 18 Mar 2021, Shift 2 · Q10The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is L⃗\vec{L}. The magnitude of the areal velocity…EasySingle correct

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.