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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 11 April 2023, Shift 2, Physics Q46

Question 46 of 90 in this shift, Physics question 16 of 30, Section A.

A plane electromagnetic wave of frequency 20 MHz20\ \mathrm{MHz} propagates in free space along x-direction. At a particular space and time, E⃗=6.6 j^ V/m\vec{E} = 6.6\,\hat{j}\ \mathrm{V/m}. What is B⃗\vec{B} at this point?
  1. (1)2.2×10−8 k^ T2.2\times10^{-8}\,\hat{k}\ TOfficial answer
  2. (2)−2.2×10−8 k^ T-2.2\times10^{-8}\,\hat{k}\ T
  3. (3)2.2×10−8 i^ T2.2\times10^{-8}\,\hat{i}\ T
  4. (4)−2.2×10−8 i^ T-2.2\times10^{-8}\,\hat{i}\ T

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.