Light Session - 1 ( Reflection by Spherical Mirrors ) Session - 2 ( Ray Diagrams - Concave and Convex Mirror ) Session - 3 Session - 4 ( Numericals based on Concave and Convex Mirror ) Session - 5 ( Refraction by Spherical Lens - Introduction ) Session - 6 Session - 7 ( Numericals on Lens ) Session - 8 ( Refraction by Glass Slab ) Session - 9 ( Numericals on Refractive Index )RevisionSession - 1Session - 2 ( Assignment Sums based on Mirror Concept )Session - 3 ( Q 5,6,8 & 9 )Session - 4 ( Q 10 & 11 + Revision of Refraction by Glass Slab )Session - 5