Question

Refractive index of crown glass and flint glass are 1.52 and 1.66, respectively. Find the ratio of speed of light in crown glass to speed of light in flint glass.

Answer 1

Refractive index n=speed of light in vaccum(c)÷speed of light in medium(v)

n1 of crown glass=1.52

1.52=c÷speed of light in crown glass.

n2 of  flint glass=1.66

1.66=c÷speed of light in flint glass.

speed of light in crown glass÷speed of light in flint glass=1.66÷1.52

                                                                                             =1.092

 Answer=1.092