Light enters from the air to glass having refractive index 1.50 calcul

1.	Light enters from the air to glass having refractive index 1.50 calculate the speed of light in the glass given :: the speed of light in vacuum is = 3' 10 8' m/s
Answer» >Answer:- $\red{\bigstar}$ Speed of light in GLASS $\large\leadsto\boxed{\sf \purple{2 × 10^8 \: m/s}}$ • Given:- Refractive INDEX of glass = 1.50 Speed of light in VACCUM = $\bf{3 \times 10^8}$ • To Find:- Speed of light in glass = ? • Solution:- We know, $\pink{\bigstar}$ $\boxed{\sf \red{Refractive \: index = \dfrac{Speed \: of \: light \: in \: vaccum}{Speed \: of \: light \: in \: medium}}}$ Hence, → $\sf{1.50 = \dfrac{3 \times 10^8}{Speed \: of \: light \: in \: glass}}$ → $\sf{Speed \: of \: light \: in \: glass = \dfrac{3 \times 10^8}{1.50}}$ → $\sf{Speed \: of \: light \: in \: glass = 2 \times 10^8}$ Therefore, the speed of light in glass is $\bf \pink{2 \times 10^8 \: m/s}$ .