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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 25 June 2022, Shift 1, Physics Q48

Question 48 of 90 in this shift, Physics question 18 of 30, Section A.

A signal of 100 THz frequency can be transmitted with maximum efficiency by :
  1. (1)Coaxial cable
  2. (2)Optical fibreOfficial answer
  3. (3)Twisted pair of copper wires
  4. (4)Water

Official answer

Option 2

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