Question

refractive index of speed of light going from air to glass is 1.5 then What is the refractive index of light going from glass to air​

Answer 1

Answer:

Step by Step Explanationn:

we know that refractive index n=  

speedoflightinmedium

speedoflightinvacuum

​  

 

where c=3×10  

8

m/s

1.5=  

v

c

​  

 

v=  

1.5

3×10  

8

 

​  

 

v=2×10  

8

m/s

For critical angle we will use snell's law

C is critical angle

n  

glass

​  

sinC=n  

air

​  

sin90     n  

air

​  

=1

sinC=  

n  

glass

​  

 

1

​  

=  

1.5

1C=41.8