In this Physics video for Class 10 in Hindi we explained what spherical mirrors are. Spherical mirrors are of two types, viz., concave spherical mirror and convex spherical mirror. We also explained what pole, centre of curvature, principal axis, principal focus, radius of curvature and focal length are.
This is a topic of Chapter 10 - 'Light - Reflection and Refraction' from NCERT for Class 10.
Pole : It is the centre of the reflecting surface.
Aperture : It is the diameter of the circular boundary of a spherical mirror.
Centre of curvature : It is the centre of the sphere of which the mirror is a part of.
Principal axis : It is the straight line joining the pole and the centre of curvature.
Radius of curvature : It is the distance of the centre of curvature from the pole of the spherical mirror.
Principal focus : It is the point where the rays parallel to the principal axis converges or appears to diverge from after reflecting from the spherical mirror.
Focal length : It is the distance of the focus from the pole of the spherical mirror.
0:00 Introduction
0:33 Curved mirrors
1:27 Spherical mirror
1:52 Concave and convex surfaces
3:24 Pole of a spherical Mirror
3:34 Aperture of a spherical Mirror
3:54 Centre of curvature of a spherical Mirror
4:22 Principal axis of a spherical Mirror
4:35 Radius of curvature of a spherical Mirror
5:10 Figure of Concave mirrors in books
6:29 Figure of Convex mirrors in books
7:35 Demonstration of burning of paper with concave mirror
8:58 Principal focus
10:23 Focal length and its relation with radius of curvature
11:38 Next topic : Image Formation by Spherical Mirrors
🔴 Click here to watch the whole playlist on Chapter 10 : 'Light - Reflection and Refraction' for Class 10 :
• Light - Reflection and...
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🔴 Light - Reflection and Refraction (Introduction)
• Light - Reflection and...