A transparent glass slab of uniform thickness is placed on a printed page.
PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A transparent glass slab of uniform thickness is placed on a printed page.
(i) The slab is 1.0cm thick, yet the letters appear to be only 0.67cm beneath the upper surface of the slab when viewed normally from air. Calculate the absolute refractive index of glass.
(ii) The same slab is completely immersed in water (refractive index =1.33) and observed normally from air. If the refractive index of glass with respect to water is 1.12, determine the apparent thickness of the slab under these conditions.