The rms value of the electric field of light coming from the Sun is 720 N/C. The average…
Physics · NEET · NTA Exams — Electromagnetic Waves
The rms value of the electric field of light coming from the Sun is 720 N/C. The average total energy density of the electromagnetic wave is
- \(4.58 \times 10^{-6} \mathrm{~J} / \mathrm{m}^{3}\)
- \(6.37 \times 10^{-9} \mathrm{~J} / \mathrm{m}^{3}\)
- \(81.35 \times 10^{-12} \mathrm{~J} / \mathrm{m}^{3}\)
- \(3.3 \times 10^{-3} \mathrm{~J} / \mathrm{m}^{3}\)
Answer
(A) 4.58 10^ -6 ~J / m ^ 3
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