https://www.khanacademy.org/science/in-in-class10th-physics/in-in-10th-physics-light-reflection-refraction/in-in-dioptres-power-of-a-lens/v/power-of-lens 2020-06-23T07:22:36Z Power of lens Power is an incredibly useful quantity when it comes to lenses. Let's find out what it is and where it is used.  Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/c64IP8i5xcc-8C32loMQEf04xqtXDe6bpxr1Ge78xF-wQTdUWCje6PsTkn7XaGj6gk6BsLDCe0EmnU_s9KXt6PsC Power of lens Power is an incredibly useful quantity when it comes to lenses. Let's find out what it is and where it is used.  https://cdn.kastatic.org/ka-youtube-converted/rogb1mLl7EU.mp4/rogb1mLl7EU.mp4 708 Dioptres & power of a lens https://www.khanacademy.org/science/in-in-class-10-physics-india-hindi/in-in-light-reflection-refraction-hindi/dioptres-power-of-a-lens-hindi/e/power-of-lens 2026-04-09T13:00:40.290711197Z Power of lens Let's practice problems involving the powers of lenses. Satrajit exercise