JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 24 February 2021, Shift 1, Physics Q5

Question 5 of 90 in this shift, Physics question 5 of 30, Section A.

Consider two satellites

S_1

and

S_2

with periods of revolution 1 hr. and 8 hr. respectively revolving around a planet in circular orbits. The ratio of angular velocity of satellite

S_1

to the angular velocity of satellite

S_2

is :

(1) $8:1$ Official answer
(2) $1:8$
(3) $2:1$
(4) $1:4$

Official answer

Option 1

NTA final key.

Chapter: Gravitation
Topic: Orbital Mechanics
Idea tested: Orbital Time Period

Same idea in other shifts

Asked 10× in all

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25 Feb 2021, Shift 1 · Q6Two satellites A and B of masses 200 kg and 400 kg are revolving round the earth at height of 600 km and 1600 km respectively. If $T_A$ …MediumSingle correctHas a figure
17 Mar 2021, Shift 2 · Q4A geostationary satellite is orbiting around an arbitary planet 'P' at a height of 11R above the surface of 'P', R being the radius of…EasySingle correct
18 Mar 2021, Shift 2 · Q5If the angular velocity of earth’s spin is increased such that the bodies at the equator start floating, the duration of the day would be…MediumSingle 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.