Question

Light enters from air to glass having refractive index 1.50 What is the speed of light in the glass? The speed of light in vacum is 3x10 to the power 8 ms-1 please anyone answer you will get 20 oints as well as brainliest?

Answer 1

Answer:

Light - Reflection and Refraction. Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 ms-1

Explanation:

Answer 2

Given :-

$\sf {Refractive\ index\ of\ Glass, n_{g}=1.50}\\\\\\\sf {Speed\ of\ light\ in\ vacuum,\ c= 3 \times 10^{8} ms^{-1}}$

$\boxed {\sf {Refractive\ index\ of\ the\ medium, \mu = \frac{Speed\ of\ light\ in\ air}{Speed\ of\ light\ in\ medium}} }$

$\sf {\therefore \ Speed\ of\ light\ in\ glass = \frac{c}{n_{g}}}\\\\\\\\\sf {\rightarrowtail \ \frac{3 \times 10^{8} m/s}{1.5} }\\\\\\\sf {\rightarrowtail \ 2 \times 10^{8}\ m/s^{-1}}$