Question

Refractive index of water is 4/3 and that of the glass is 3/2 with regard to air. What is the refractive index of glass with respect to the water?

1 point

9/8

8/9

1/2

2​

Answer 1

Answer:

Refractive index of water n

w

=

3

4

Refractive index of gas n

g

=

2

3

Refractive index of glass w.r.t. water n

gw

=

n

w

n

g

⟹ n

gw

=

4/3

3/2

=

8

9

So, answer is 9/8.