SILVERING & CUTTING OF LENS | RAY OPTICS-10 | CLASS 12| JEE MAINS | ADV | NEET | EAPCET | తెలుగు లో

📚 Ray Optics Lecture 10 | Silvering of Lenses & Cutting of Lenses
Have you ever wondered what happens when a lens is silvered on one surface? Does the focal length change? What happens to image formation? And if a lens is cut into different shapes, does its focal length remain the same or change?
In this lecture, we explore these fascinating and highly conceptual topics from Ray Optics that are frequently asked in JEE Main, JEE Advanced, NEET, and Board Exams.
This video covers complete theory, derivations, conceptual understanding, shortcut methods, and challenging numerical problems.
🔥 Topics Covered
Silvering of Lenses
✅ What is silvering of a lens?
✅ Silvering on Convex Lens
✅ Silvering on Concave Lens
✅ Silvering on Plane Surface
✅ Lens-Mirror Combination
✅ Effective Focal Length after Silvering
✅ Image Formation in Silvered Lenses
✅ Sign Conventions and Formula Applications
✅ Important JEE & NEET Concepts
Cutting of Lenses
✅ Cutting a Lens Along Principal Axis
✅ Cutting a Lens Perpendicular to Principal Axis
✅ Effect on Radius of Curvature
✅ Effect on Aperture
✅ Effect on Focal Length
✅ Effect on Power of Lens
✅ Image Formation after Cutting
✅ Common Student Mistakes
Challenging Numericals
✅ JEE Main Level Problems
✅ JEE Advanced Conceptual Questions
✅ NEET-Oriented Numericals
✅ Shortcut Approaches
✅ Exam-Oriented Tricks
🎯 This Lecture is Useful For
✔️ JEE Main Aspirants
✔️ JEE Advanced Aspirants
✔️ NEET Aspirants
✔️ Class 12 Students
✔️ CBSE Students
✔️ State Board Students
✔️ Competitive Exam Preparation
💡 What You Will Learn
🔹 How silvering converts a lens into a lens-mirror system
🔹 How focal length changes after silvering
🔹 Why some cut lenses retain the same focal length
🔹 How aperture and image brightness change after cutting
🔹 Fast methods to solve advanced numerical problems
🔹 Concepts frequently tested in competitive exams
📌 Part of the Complete Ray Optics Series
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Time Stamps:
00:00 Glimpse
02:05 Sivering of lens Intro
07:18 Power of lens and mirrors
09:10 Effective Power
14:05 Numerical 1
19:39 Numerical 2
27:52 Bottom of a glass beaker is made up of thin equi convex lens having bottom side silver polished as shown in figure water is filled in the beaker up to a height 4 m the image of a point object floating at middle point of Beaker at the surface of water coinsides with it find out the radius of curvature of the lens
35:10 A concave convex lens is placed on a horizontal table with its convex surface polished to make it reflecting as shown in figure if Radi of curvature of its two surfaces are 30 cm and 60cm respectively find the position on its principle access where a point object should be placed to obtain image on itself
40:42 As shown in fig L is half part of an equi convex lens who surface have radius of curvature R=40 cm and its right surfaces silvered. Normal to principal Axis a plane mirror M is placed on the right of lens. A small object O is placed on left of the lens such that there is no parallax between final image formed by the lens and mirror. If transverse length of final image formed by the lens is twice that of image formed by the mirror calculate the distance between lens and object
50:22 Cutting of lens
56:57 Lens made of different materials

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