Question

Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is , a ray incident at an angle , on the face AB would get transmitted through the face AC of the prism provided

299495
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A

B

C

D

Hard
JEE Advanced

Solution

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Correct option is A)

Consider refraction though AB surface 

Using Snell's law,

...(i)

Now for ray to transmit through AC the angle of incidence should be less the 

critical angle 

i.e.

From triangle APQ


From equation (i)


Option A is correct.

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