7. Refraction by Spherical Lenses (गोलिय लेंस द्वारा प्रकाश किरणों के अपवर्तन का नियम) 8. Nature, position and relative size of the image formed by a convex lens for ...

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent ...

To demonstrate a quick way of calculating the optical difference between two refractions using vector analysis, and to express this as a score for examination purposes. An existing formula is applied, ...