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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 27 January 2024, Shift 1, Physics Q44

Question 44 of 90 in this shift, Physics question 14 of 30, Section A.

A plane electromagnetic wave propagating in xx-direction is described by Ey=(200 Vm−1)sin⁡[1.5×107t−0.05 x]E_y = (200\ \mathrm{Vm^{-1}})\sin[1.5\times10^{7}t - 0.05\,x]; The intensity of the wave is : (Use ϵ0=8.85×10−12 C2N−1m−2\epsilon_0 = 8.85\times10^{-12}\ \mathrm{C^2N^{-1}m^{-2}})
  1. (1)53.1 Wm−2\mathrm{Wm^{-2}}Official answer
  2. (2)106.2 Wm−2\mathrm{Wm^{-2}}
  3. (3)26.6 Wm−2\mathrm{Wm^{-2}}
  4. (4)35.4 Wm−2\mathrm{Wm^{-2}}

Official answer

Option 1

NTA final key.

Topic
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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.