Question

the refractive index of glass is 1.50 and the speed of light in air is 3×10⁸m/a. Calculate the speed of light in glass?​

Answer 1

Answer:

Refractive index = Speed of light in vacuum/air ÷

Speed of light in medium.

Given,

Refractive index = 1.50

Speed of light in air = 3×10^8 m/s

Speed of light in glass = x = ?

$1.50 = \frac{3 \times {10}^{8} }{x} \:$

$x = \frac{3 \times {10}^{8} }{1.50}$

$x = 2 \times {10}^{8} {ms}^{ - 1}$

Speed of light in glass is 2×10^8 m/s.

HOPE YOU UNDERSTAND!!