Class 10 | Science | Reflection and Refraction | Part-10

Welcome to our Class 10 Science lesson on Power of a Lens! In this video, we explain the concept of lens power, its formula, and practical applications in daily life. This topic is essential for CBSE/NCERT Class 10 students preparing for exams, numerical problems, and concept clarity in optics. This lesson is part of NCERT Class 10 Science Chapter – Light: Refraction and Lenses. Sign convention for convex and concave lenses Relation between focal length and lens power Positive and negative power for converging and diverging lenses Step-by-step examples and numerical problems Applications of lens power in eyeglasses, contact lenses, microscopes, and telescopes Perfect For: Class 10 CBSE/NCERT Students Exam preparation & revision Understanding optics concepts visually Solving numerical problems using lens power formula Topics Covered According to NCERT: Definition of power of a lens Formula and derivation Positive and negative lenses Applications of lens power in daily life Step-by-step numerical examples Relation with focal length