Question

The speed of light is:
(a) fastest in wate.
(b) fastest in water than in air
(c) slower in water than in air
(d) same in all medium​

Answer 1

Answer:

c option is the answer of your question

Answer 2

Speed of light is

(C) slower in water than in air.

Whereas the speed of light in vaccum/air is 3×10⁸ m/s it's spread decreases to 2×10⁸m/s in glass or water. This is due to the high refractive index of the water.

Cheers!