Learn

Friday, 9 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 29 June 2022, Shift 1, Physics Q52

Question 52 of 90 in this shift, Physics question 22 of 30, Section B.

The intensity of the light from a bulb incident on a surface is 0.22 W/m2\mathrm{W/m^2}. The amplitude of the magnetic field in this light-wave is ____________ ×10−9\times 10^{-9} T. (Given : Permittivity of vacuum ϵ0=8.85×10−12 C2 N−1-m−2\epsilon_0 = 8.85 \times 10^{-12}\ \mathrm{C^2\,N^{-1}\text{-}m^{-2}}, speed of light in vacuum c=3×108 ms−1c = 3 \times 10^8\ \mathrm{ms^{-1}})

Official answer

43

NTA final key (2022 Session 1).

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.