Components of Spherical Lenses - Light: Reflection And Refraction | Class 10 Physics 2022-23
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In this video,
โ๏ธ Class: 10th
โ๏ธ Subject: Physics
โ๏ธ Chapter: Light: Reflection And Refraction (Chapter 10)
โ๏ธ Topic Name: Components of Spherical Lenses - Light: Reflection And Refraction | Class 10 Physics Chapter 10 (2022-23)
โ๏ธ Topics Covered In This Video (by Vibhuti Ma'am): This YouTube description is for a physics lesson about the components of spherical lenses in Class 10 science. It covers topics such as light reflection and refraction, as per the curriculum for the 2022-23 academic year. The lesson is taught by Vibhuti Mam.
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00:00 Introduction: Light: Reflection And Refraction
00:04 Some Terms Associated with Spherical Lenses
25:19 Website Overview
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Points covered in this video:-
Some Terms Associated With Spherical Lenses -
I. Aperture:
- The aperture of a lens is the diameter of the circular edge of the lens.
- AB is a diameter of the circular edge of the lens, which represents aperture of the lens.
II. Centres of curvature:
- Lens whether convex or concave has two spherical surfaces.
- Each of these surfaces forms a part of a sphere.
- The centres of these spheres are called of curvature of the lens.
- They are represented usually C1 and C2 or C1โ and C2โ.
III. Principal axis:
- An imaginary straight line passing through centres of curvature of the two surfaces of the lens is called principal axis of the lens.
- The straight line C1C2 represents principal axis of convex lens.
- Straight line C1โC2โ represents principal axis of concave lens.
IV. Optical Centre:
- The optical centre of a lens is a point on the principal axis of the lens, such that a ra of light passing through it goes undeviated, i.e., the rays passing through optical centre of the lens suffer no refraction.
- Optical centre of the lens is represented by the point C.
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