Question

Refractive index of water in 4/3 .What is the velocity of light in the water
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Answer 1

Answer:

refractive index = speed of light in vaccuam÷speed of light in given medium

here 4/3 =  speed of light in vaccuam ÷speed of ligth in water

The speed of light  c = 3x10^8 m/s      

4/3  = 3×10^8÷V

4V  =3×3×10^8

  V   = 9/4 × 10^8

  V = 2.25×10^8