Question

The absolute refractive index of water is 1.36. What is the

velocity of light in water? (velocity of light in vacuum is 3 x 108

m/s )​

Answer 1

Answer:

2.21X 10⁸ m/s

Explanation:

given,

refractive index of light in water - 1.36

speed of light in vacuum - 3X 10⁸ m/s

$RI = \frac{vacuum speed}{medium speed}$

$1.36 = \frac{3 X10^{8} }{y} \\y = \frac{3X10^{8} }{1.36} \\ = 2.205 X 10^{8}$