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Friday, 9 October

JEE Main 2021 · PhysicsMultiple choiceMatch the listEasyRecall

JEE Main 18 March 2021, Shift 1, Physics Q18

Question 18 of 90 in this shift, Physics question 18 of 30, Section A.

Match List - I with List - II. List - I (a) 10 km height over earth's surface (b) 70 km height over earth's surface (c) 180 km height over earth's surface (d) 270 km height over earth's surface List - II (i) Thermosphere (ii) Mesosphere (iii) Stratosphere (iv) Troposphere
  1. (1)(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)Official answer
  2. (2)(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  3. (3)(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
  4. (4)(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

Official answer

Option 1

NTA final key.

Chapter
Communication Systems
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.