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Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 6 April 2026, Shift 2, Physics Q31

Question 31 of 75 in this shift, Physics question 6 of 25, Section A.

For an electromagnetic wave propagating through vacuum, k⃗\vec{k}, E⃗\vec{E} and ω\omega represent propagation vector, electric field and angular frequency, respectively. The magnetic field associated with this wave is represented by :
  1. (1)E⃗×k⃗ω\frac{\vec{E}\times\vec{k}}{\omega}
  2. (2)k⃗×E⃗ω\frac{\vec{k}\times\vec{E}}{\omega}Official answer
  3. (3)ω(E⃗×k⃗)\omega\left(\vec{E}\times\vec{k}\right)
  4. (4)ω(k⃗×E⃗)\omega\left(\vec{k}\times\vec{E}\right)

Official answer

Option 2

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