An electromagnetic wave of intensity| Electromagnetic Waves

JEE MAIN 2019

11-01-2019 S1

Question

An electromagnetic wave of intensity $50 \mathrm{Wm}^{-2}$ enters in a medium of refractive index ' $n$ ' without any loss. The ratio of the magnitudes of electric fields, and the ratio of the magnitudes of magnetic fields of the wave before and after entering into the medium are respectively, given by

Select the correct option:

$\left(\frac{1}{\sqrt{n}}, \sqrt{n}\right)$

$\left(\sqrt{n}, \frac{1}{\sqrt{n}}\right)$

$\left(\frac{1}{\sqrt{\mathrm{n}}}, \frac{1}{\sqrt{\mathrm{n}}}\right)$

$(\sqrt{n}, \sqrt{n})$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution