JEE Main 2026 — Electromagnetic Waves Question with Solution
JEE Main 2026 (23 January Shift 1)
Question
The equation of the electric field of an electromagnetic wave propagating through free space is given by :
The average power of the electromagnetic wave is . The value of is
(Take in SI units)
The average power of the electromagnetic wave is . The value of is
(Take in SI units)
Enter your answer
Show full solutionCorrect answer: 2
Correct answer
2
Step-by-step explanation
From the electric field equation, amplitude:
N/C
Average intensity of EM wave:
where Ω
W/m²
Given W/m², we have
Therefore,
N/C
Average intensity of EM wave:
where Ω
W/m²
Given W/m², we have
Therefore,
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