Question

Find n of the glass with respect to water where n of glass with respect to air is 3/2 and that of water with respect to air is 4/3

Answer 1

n of glass with respect to air is 3/2.

n of water with respect to air is 4/3

Then n of glass with respect to water is

3/2 / 4/3

=9/8.

Hope this helps you.