Question

pls answer this correctly with explanation..
i will mark as brainliest....

Answer 1

Answer:

The minimum refractive index of the right prism is 1.414 i.e. option (c) $\sqrt{2}$

Explanation:

Since this is a right prism, the other two angles are 30 and 60

We know that B>>A

This is an example of total internal reflection.

therefore, i (a) > i (b)   >>>>>>>> (angle of incidence = i )

i(b) max = 45

$\alpha$(c) ...... (critical angle)

$\alpha$(c) $\leq$ 45

$sin\alpha(c) \leq sin 45$

1/ u = 1 /$\sqrt{2}$

thus, the refractive index is u= $\sqrt{2}$