JEE Main 2021 — Electromagnetic Waves Question with Solution
From: JEE Main 2021 (Online) 31st August Morning Shift
Question
The electric field in an electromagnetic wave is given by E = (50 NC1) sin (t x/c)
The energy contained in a cylinder of volume V is 5.5 1012 J. The value of V is _____________ cm3. (given 0 = 8.8 1012C2N1m2)
The energy contained in a cylinder of volume V is 5.5 1012 J. The value of V is _____________ cm3. (given 0 = 8.8 1012C2N1m2)
Enter your answer
Show full solutionCorrect answer: 500
Correct answer
500
Step-by-step explanation
Energy density =
Energy of volume
= .0005 106 (c.m)3
= 500 (c.m)3
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