Question

(ii) The velocity of light in a medium is 2 x 108 m/s. What is the refractive
index of the medium with respect to air, if the velocity of light in air is
3 x 108 m/s?​

Answer 1

Answer:

Given : Velocity of medium =1.5×10  

8

m/sec.

           Velocity of light, c=3×10  

8

m/sec.

To find : n=?

            n=  

v

c

​  

 

            n=  

1.5×10  

8

 

3×10  

8

 

​  

 

               =2

           n=2

Hence, the refractive index of the medium with respect to air is 2.