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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 25 June 2022, Shift 2, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

The electromagnetic waves travel in a medium at a speed of 2.0×1082.0 \times 10^8 m/s. The relative permeability of the medium is 1.0. The relative permittivity of the medium will be :
  1. (1)2.25Official answer
  2. (2)4.25
  3. (3)6.25
  4. (4)8.25

Official answer

Option 1

NTA final key.

Chapter
Electromagnetic Waves
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 108 of the 174 JEE Main shifts held from 2017 to 2026.