Reflection of light (important Topics) class 10 science

 

REFLECTION OF LIGHT

CLASS 10 IMPORTANT TOPICS

Reflection Of Light

Reflection is the process where light rays encounter the boundary between two different media and bounce back into the original medium. Specifically, it refers to the phenomenon where light rays that strike the surface of an object are returned into the same medium rather than passing through or being absorbed.

Laws of Reflection

1. The path of the incoming ray, the path of the reflected ray, and the perpendicular line (normal) to the surface at the point of incidence are all situated in the same plane.
2. The angle at which the incoming light ray impacts a surface (the angle of incidence) is equal to the angle at which it bounces off (the angle of reflection) ∠i=∠r
   
   
   

2. Some basic Terms Related To Spherical Mirrors

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   Sign Conventions For Spherical Mirrors

   

   Image Formation By Convex And Concave Mirror

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   Convex Mirror

   

   Uses of Concave and Convex Mirror

   1. Concave Mirror-Reflectors in the headlights, search light in torches
   2. Convex Mirror-Rear View in an Automobile.

   2. Mirror Formula

      The relationship between the object distance(u), the image distance(v) and the focal length(f) is given by Mirror Formula.