Save guides, add subjects and pick up where you left off with your BBC account. A ray diagram shows how light travels, including what happens when it reaches a surface. In a ray diagram ...

Solve ray-diagram problems and numerical questions. Day 4: Light - Refraction Study the laws of refraction and refractive index. Understand total internal reflection and critical angle.

Usually, four marker questions from the chapter are asked in the CBSE Board Examinations. Derivations, formulas, ray diagrams, and important concepts from ray optics and optical instruments are ...