Easy MCQ +4 / -1 PYQ · JEE Mains 2023

The ratio of average electric energy density and total average energy density of electromagnetic wave is :

  1. A 1
  2. B 3
  3. C 2
  4. D $\frac{1}{2}$ Correct answer

Solution

Avg electric energy density $=\frac{1}{4} \varepsilon_0 \mathrm{E}_0^2$ <br/><br/>Total Avg energy density $=\frac{1}{2} \varepsilon_0 \mathrm{E}_0^2$ <br/><br/>$\therefore$ Ratio of average electric energy density and total Avg energy density <br/><br/>$$ = \frac{\frac{1}{4} \varepsilon_0 \mathrm{E}_0^2}{\frac{1}{2} \varepsilon_0 \mathrm{E}_0^2}=\frac{2}{4}=\frac{1}{2} $$

About this question

Subject: Physics · Chapter: Electromagnetic Waves · Topic: Properties of EM Waves

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