A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be
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a)
b)
c)
1.5
d)
2.0
a)
b)
c)
1.5
d)
2.0
Question ID - 152664 | SaraNextGen Top Answer A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be
a)
b)
c)
1.5
d)
2.0
A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be
|
a) |
|
b) |
|
c) |
1.5 |
d) |
2.0 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
(a)
From figure it is clear that TIR takes place at surface 
and 
.png)
Hence 
127 votes
Answer Link
127