Lesson 11: Reflection of Light ( प्रकाशाचे परावर्तन ) English Notes: Plane Mirror: A flat and smooth glass piece with a thin reflecting film of aluminum or silver coated on its back surface. A protective lead oxide coat is applied over the reflecting film to make it opaque. o Image Formation: When light rays from a point source reflect off a plane mirror, they appear to originate from a point behind the mirror, forming a virtual image. For an extended source, images of all points combine to form the complete image. o Lateral Inversion: When a word is held in front of a mirror, it appears laterally inverted because the image of every point is formed behind the mirror at the same distance, but left and right is reversed. o Minimum Mirror Height: To see a person's full image, the mirror's minimum height must be half the person's height. o Multiple Images: When two plane mirrors...