Question

What is the speed of light in water of refractive index 1.33?

n= c/v

Answer 1

Explanation:

Given :-

Refractive Index (n) = 1.34

Speed of light in air = 3 × 10⁸ m/s

$n \: = \frac{c}{v}$

$v \: = \frac{c}{n}$

$v = \frac{3 \times {10}^{8} }{1.33}$

$v = 2.55 \times {10}^{8} m {s}^{ - 1}$