JEE Main 2026 — Electromagnetic Waves Question with Solution
JEE Main 2026 (21 January Shift 2)
Question
An electromagnetic wave of frequency 100 MHz propagates through a medium of conductivity, . The ratio of maximum conduction current density to maximum displacement current density is .
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Show full solutionCorrect answer: 1800
Correct answer
1800
Step-by-step explanation
For an electromagnetic wave in a conducting medium, the maximum conduction current density is and maximum displacement current density is .
The ratio is: .
With mho/m, MHz
So rad/s, and F/m: .
The ratio is: .
With mho/m, MHz
So rad/s, and F/m: .
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This is a previous-year question from JEE Main 2026, 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.