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>> $As shown in Fig. AB = AC. Find the minim$

Question

As shown in Fig. AB=AC. Find the minimum value of refractive index $μ$ for the given material.

151640

A

$2$

B

$3$

C

$1.5$

D

$1.6$

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Solution

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Correct option is A)

We have
$μ = \frac{1}{s i n C}$

Given $C = 45$

$⟹ μ = \frac{1}{s i n 4 5} = 2$

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