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Tuesday, August 7, 2007
about:
ray diagram for mirrors
author:CaMaE518
Using the ray diagram we could find the location of the object, we could know if the image is inverted or upright, enlarged or decreased in size and if it is a virtual or real image. All of these will depend to the distance of the object from the mirror.
Ray Diagram for concave mirror:

Decide the location of the object.
- at the top of the object draw a line parallel to the principal axis and another line that would pass through the focal point.
*there should be an arrow head for every ray to indicate the location to where it is going.*

3. after drawing the incident rays, draw the reflected rays. rules for the reflection of concave mirror should be followed. this suggests that ray the is parallel to the principal axis would be refected passing through the focal point and the ray passing though the focal point will be reflected parallel to the principal axis. and their intersection would be the location of the top part of the object.

4. after drawing the top part of the object, connect it perpendicular to the principal axis.
Ray diagram for Convex Mirror:

- determine the distance of your object. at the top most part of the object, draw a ray parallel to the principal axis and another line that is passing through the focal length.
- the line parallel to the principal axis will be reflected and its extension should pass the focal point. and the line that passed through the focal point will be reflected parallel to the principal axis and its extension parallel to the principal axis also.

- Their intersection is the location of the topmost part of the object .