Question

The refractive index of water is 1.33. What will
be speed of light in water?
(a) 3 × 10⁸ m/s (b) 2.25 × 10⁸ m/s
(c) 4 × 10⁸ m/s (d) 1.33 × 10⁸ m/s

Answer 1

Answer:

speed of light in water is 2.25×10^8 m/s

Answer 2

Answer:

Refractive index= Speed of light in vaccum/Speed of light in water

It is denotes as n=c/v,v=c/n=3×10^8m/s/(1.33)=2.25×10^8m/s

Therefore, refractive index of water can be measure by the Speed of light in water is 2.25×10^8m/s