A plastic hemisphere has a radius of curvature of `8 cm` and an index of refraction of `1.6` .
Channel: Doubtnut
Date: 2020-01-19

A plastic hemisphere has a radius of curvature of `8 cm` and an index of refraction of `1.6` . On the axis halfway between the plane surface and the spherical one `( 4 cm ` from each `)` is a small object `O`. The distance between the two images when viewed along the axis from the two sides of the hemisphere is approximately .