Light of wavelength in air is incident normally on a glass slab of refractive index .
PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
Light of wavelength 600nm in air is incident normally on a glass slab of refractive index 1.5.
(i) Calculate the speed of light inside the glass slab.
(ii) Determine its wavelength inside the glass.
(iii) On the basis of your results, state whether glass is optically denser or rarer than air and justify your answer quantitatively.