SATHEE: Optics Question 573

Optics Question 573

Question: When the angle of incidence on a material is 60°, the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms?1)

[Kerala PMT 2005]

Options:

A) $3 \times 10^{8}$

B) $(\frac{3}{\sqrt{2}}) \times 10^{8}$

C) $\sqrt{3} \times 10^{8}$

D) $0.5 \times 10^{8}$

Show Answer

Answer:

Correct Answer: C

Solution:

From Brewster’s law $μ = \tan i_{p}$

Therefore $\frac{c}{v} = \tan 60^{\circ} = \sqrt{3}$

Therefore $v = \frac{c}{\sqrt{3}} = \frac{3 \times 10^{8}}{\sqrt{3}} = \sqrt{3} \times 10^{8}$ m/sec.

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Optics Question 573

Question: When the angle of incidence on a material is 60°, the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms?1)

Options:

Answer:

Solution:

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