Reflection of Light💥All derivations & Numericals 🎯Part 1/5 Chapter 9 Ray optics 💥 Class 12 Physics
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CBSE Class 12 Physics
NCERT Chapter 9: Ray Optics & Optical Instruments
Reflection of Light
Laws of Reflection
Derivation of Mirror Formula
Magnification of Image
Terms related to Spherical Mirrors like Centre of Curvature, Radius of curvature, Pole, Linear aperture etc.
Uses of Spherical mirrors
Concave mirror
Convex mirror
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Chap 9 part 1 Ray Optics and Optical Instruments
00:00:00 Introduction
00:09:12 Behaviour of Light at the interface of two media
00:12:05 Laws of reflection of light
00:14:07 Spherical Mirrors
00:15:30 Spherical mirrors are of two types
00:17:18 Definition in Connection with Spherical Mirrors
00:25:40 New cartesian sign Convention for Spherical Mirrors
00:29:23 Relation between f and R
00:35:53 Rules for drawing images formed by Spherical Mirrors
00:39:55 Formation of Images by Concave Mirrors
00:47:01 Formation of an image by Convex Mirror
00:49:30 Mirror formula
00:50:13 Derivation of mirror formula for a concave mirror when it forms a real image
01:02:23 Derivation of mirror formula for a concave mirror when it forms a virtual image
01:02:23 Derivation of mirror formula for a convex mirror
01:03:15 Linear magnification
01:04:33 Derivation of Linear magnification
01:09:12 For your Knowledge
01:11:30 Spherical aberration
01:16:26 Uses of concave mirrors
01:19:05 Uses of Convex mirrors
01:20:12 Uses of parabolic mirrors
01:21:52 Numericals
The phenomenon of reflection of light is a fundamental concept in optics. When light encounters a surface, it can bounce back or reflect off the surface. The laws of reflection describe how light behaves during this process.
The laws of reflection state the following:
The incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.
The angle of incidence (θᵢ) is equal to the angle of reflection (θᵣ), measured with respect to the normal.
Key terms associated with reflection of light:
Incident ray: The ray of light that strikes the surface.
Reflected ray: The ray of light that bounces off the surface.
Normal: A line perpendicular to the surface at the point where the incident ray strikes it.
Angle of incidence: The angle between the incident ray and the normal.
Angle of reflection: The angle between the reflected ray and the normal.