Question

If the refractive index of glass with respect to air is 3/2, what is the refractive index of air with respect to glass?

Options

• `1/2`

• 3

• `1/3`

• `2/3`

Answer 1

`bb(2/3)`

Explanation:

Given:

Refractive index of glass with respect to air = `3/2`

The refractive index of air with respect to glass is the reciprocal:

`n_(air"/"glass) = 1/(n_(air"/"glass)`

= `1/(3/2)`

= `2/3`