Question

The refractive indices of glass and water with respect to air are 3/2 and 4/3 respective
If speed of light in glass is 2 x 10^8 m/s, find the speed of light in water
[Ans.2 25 x 10 m]
​

Answer 1

nw=c/v

4/3=3×10^8/v

v=3×3×10^8/4

v=9×10^8/4

v=2.25×10^8 m/s

I hope this helps ( ╹▽╹ )