Question

A Ray Of Light Incident At An Angle On A Refracting Face Of A Prism Emerges From The Other Face Normally. If The Angle Of The Prism Is And The Prism Is Made Of A Material Of Refractive Index 1.5, The Angle Of Incidence Is___

Answer 1

Answer:

ExplanatioWe have deviation, δ=(M−1)A

δ=(1.5−1)5  

∘

=2.5  

∘

 

The angle of the prism is 50°.The ray emerges from refracting face of a prism normally.

Then, i  

2

​  

=r  

2

​  

=0

As, A=r  

1

​  

+r  

2

​  

=0

r  

1

​  

=A

r  

1

​  

=50°

But i  

1

​  

=μr  

1

​  

=  

2

3

​  

×5=7.5°n: