Question

Light rays are incident at an angle of 90°, emerging through the prism as shown in figure. Find 0. ee Incident ray m d 45° Emergent ray h 90° 45° r r (a) 45° (c) 30° (b) 60° (d) 90°

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Answer 1

Answer:

here is your answer hope it helps you the answer is 45(a )part

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Answer 2

Answer:

light ray is incident perpendicularly to one face of a 90

∘

prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45

∘

, we conclude that the refractive index n :

6344

expand

Medium

Solution

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Correct option is

B

n>

2

We know

θ

cric

=sin

−1

(

n

1

)

45

o

>θ

sin(45

o

)>

n

1

⇒n>

2