JEE Main 2019 — Electromagnetic Waves Question with Solution
From: JEE Main 2019 (Online) 12th January Evening Slot
Question
The mean intensity of radiation on the surface of the Sun is about 108 W/m2 . The rms value of the corresponding magnetic field is closet to :
Choose an option
Show full solutionCorrect option: C
Correct answer
C104 T
Step-by-step explanation
I =
& Erms = cBrms
I = C3 B
B =
Brms 104
& Erms = cBrms
I = C3 B
B =
Brms 104
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Electromagnetic Waves chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2019, covering the Electromagnetic Waves chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.