SATHEE: Optics Question 949

Optics Question 949

Question: A light wave travels from glass to water. The refractive index for glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The value of the critical angle will be:

Options:

A) $\sin^{- 1} (\frac{1}{2})$

B) $\sin^{- 1} (\frac{9}{8})$

C) $\sin^{- 1} (\frac{8}{9})$

D) $\sin^{- 1} (\frac{5}{7})$

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $\frac{3}{2} \sin c = \frac{4}{3} \sin 90$

$\Rightarrow$ $c = \sin^{- 1} (\frac{8}{9})$

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Optics Question 949

Question: A light wave travels from glass to water. The refractive index for glass and water are 32 and 43 respectively. The value of the critical angle will be:

Options:

Answer:

Solution:

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Question: A light wave travels from glass to water. The refractive index for glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The value of the critical angle will be: