SATHEE: Optics Question 98

Optics Question 98

Question: The refractive index of the material of the prism and liquid are 1.56 and 1.32 respectively. What will be the value of q for the following refraction

[BHU 2003; CPMT 2004]

Options:

A) $\sin θ \geq \frac{13}{11}$

B) $\sin θ \geq \frac{11}{13}$

C) $\sin θ \geq \frac{\sqrt{3}}{2}$

D) $\sin θ \geq \frac{1}{\sqrt{2}}$

Show Answer

Answer:

Correct Answer: B

Solution:

For total internal reflection from surface $B C$

$θ \geq C \Rightarrow \sin θ \geq \sin C$

$\Rightarrow \sin θ \geq (\frac{1}{_{l} μ_{g}})$

$\Rightarrow$ $\sin θ \geq (\frac{μ_{L i q u i d}}{μ_{P r i s m}})$

$\sin θ \geq (\frac{1.32}{1.56}) \Rightarrow \sin θ \geq \frac{11}{13}$

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Optics Question 98

Question: The refractive index of the material of the prism and liquid are 1.56 and 1.32 respectively. What will be the value of q for the following refraction

Options:

Answer:

Solution:

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