Reflection of light mirrors Behavior of light using

Reflection of light - mirrors

Behavior of light using mirrors: n Rays of light hitting a flat mirror reflect in the same direction. n However, rays of light hitting a curved mirror reflect in different directions. n There are two types of mirrors: concave and convex.

Concave mirrors n n n Concave mirrors are curved inward toward the center (like an entrance to a “cave” or the inside of a spoon). The rays of light hitting a concave mirror move toward each other, crossing over each other and then move apart again. The point at which the rays meet is called the focal point of the mirror.

Images in Concave mirrors: If you are standing far away from a concave mirror, your image appears to be upside down and smaller. n If you are standing inside the focal point, your image appears to be right-side up and much larger than normal. n

Concave mirror diagram:

Examples of concave mirrors: Used in vehicle headlights n Used by doctors to focus light into ears, throat, etc. n Used in make up mirrors n Focus light for heating purposes n Used by dentists to see teeth in back of mouth clearly n

Convex mirrors are curved outward, like the bottom of a spoon. n When light rays hit the surface of a convex mirror, the light rays move away from each other. n Your image appears smaller than you really are and is right-side up. n

Convex mirror diagram:

Examples of convex mirrors: Used around corners of buildings n Used in sunglasses n Passenger side door mirror n Used at ATMs for protection n Two placed back to back make a magnifying glass n