Question

Light enters from air into glass having refractive index 1.50

↪️what is the speed of light in the glass ?

☑️☑️GIVEN IS the speed of light in vacuum is 3*10^8m/s^-1​

Answer 1

$\huge\underline\bold\color{red}\mathfrak{Answer}$

$\bold\color{red}{Formula}$

N = C/V

where, N = refractive index of the medium

C = speed of light in air

V = speed of light in the medium

N = C/V

V = C/N

V = 3 × 10^8 / 1.5

V = 2 × 10^8 m/s

Therefore speed of light in glass is 2 × 10^8 m/s

#WMK

Answer 2

Formula

N = C/V

where, N = refractive index of the medium

C = speed of light in air

V = speed of light in the medium

N = C/V

V = C/N

V = 3 × 10^8 / 1.5

V = 2 × 10^8 m/s

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

itzDopeGirl❣