(i) ∠i (Angle of incidence) = ∠r (Angle of reflection)
The angle of incident is equal to the angle of reflection
(ii) The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
(i) Regular Reflections: Reflection from a smooth surface like that of a mirror is called regular reflection.
(ii) Irregular Reflections: When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as diffused or irregular reflection.
Number of image formed in multiple reflection = (360°/angle between two plane mirror) - 1
Protection of Human Eye
To protect your eyes, the following points should be remembered:
|1. What is light?|
|2. How does light travel?|
|3. What are the properties of light?|
|4. What are the sources of light?|
|5. How does light interact with objects?|