Question

If the angle of incidence of a Ray of light falling on the glass surface is 30 degree....

Answer 1

Answer:

Given ,

n  

ag

​  

=  

2

3

​  

∠i=30  

0

 

From snell's law  

n=  

sinr

sini

​  

 

By putting values of n, i in equation  

we get

2

3

​  

=  

sinr

sin30  

0

 

​  

 

⇒sinr=  

3

1

​  

 

r=19  

0

47  

′

≃20  

0

 

the angle of refraction is 20 degree

Explanation: