Скачать или смотреть Mastering Light : Image Characteristics of Concave Mirror | Dr. Rahul Ramesh | Class X Physics

This video lecture by Dr. Rahul Ramesh at R Square Education details the six different positions of an object in front of a concave mirror (converging mirror) and the corresponding characteristics of the image formed. Understanding these characteristics—position, size, and nature—is crucial for mastering ray diagrams.

Key Rules for Ray Diagrams

The video will explain how to draw ray diagrams for each case using the following essential rules:

A ray parallel to the Principal Axis, after reflection, will pass through the Principal Focus (F).

A ray passing through the Principal Focus (F), after reflection, will become parallel to the Principal Axis.

A ray passing through the Center of Curvature (C) is reflected back along the same path (since it strikes the mirror normally).

The only case where a virtual image is formed is case 6, which is the principle used in shaving mirrors and dentist's mirrors to get a magnified, upright view.