# If the Refractive Index of Glass with Respect to air is 1.5 then Respective air will be

If the refractive index of glass with respect to air is 1.5. Then the respective index of air with respect to air will be

- 3/2
- 2/3
- 1/2
- 2.5

If the refractive index of glass with respect to air is 1.5. Then the respective index of air with respect to air will be

- 3/2
- 2/3
- 1/2
- 2.5