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Friday, August 3, 2007
So, here goes the procedures of making ray diagrams according to my own understanding... :)
MIRRORS!!!
RAY DIAGRAM FOR CONCAVE MIRROR:
1. Draw a line from the tip of the object parallel to the mirror; the first incident ray.
2. Draw another line from the tip of the object passing throught the focal point; second incident ray.
3. From the first incident ray, draw another line passing throught the focal point; ray of reflection 1.
4. From the second incident ray, draw another line parallel to the main axis used; ray of reflection 2.
5. Now, draw a perpendicular line from the intersection of the two rays of reflection to the main axis. Then, there goes your image!
RAY DIAGRAM FOR CONVEX MIRROR:
1. Draw a line parallel to the main axis from the tip of your object.
2. Draw another line from the tip of the objedct passing through the focal point at the back of the mirror.
3. Draw a line passing the point the first incident ray touches the mirror and also passing throught the focal point at the back.
4. Then, draw another line parallel to the main axis and passing throught the point where the second incident ray touches the mirror.
5. The last two lines drawn should be extended up to the back of the mirror.
6. Now, the intersection of the rays is the tip of your image. Draw a perpendicular line from it to the main axis.
RAY DIAGRAM FOR PLANE MIRROR:
1. Draw a line representing your mirror.
2. Draw an arrow to represent your object.
3. Draw 2 lines from the tip of the arrow to the mirror.
4. Draw another two lines from the other end of the line to the mirror.
5. Get the reflected ray by having the same measure of degrees formed.
6. Connect the rays at the back of the mirror.
7. You should have all the measurements checked for you to have the image correctly placed. :]
LENSES!!!
RAY DIAGRAM FOR CONVERGING LENSES:
1. First incident ray: Draw a parallel line from the tip of the object to the lens.
2. Second incident ray: Draw a line from the tip of the object to the center of the lens, or the intersection of your axes.
3. Third incident ray: Draw a line from the tip of the object passing throught the focal point in front of the lens.
4. Draw a line from the the point where the first incident ray touches the lens to the focal point at the back of the lens.
5. Extend the second incident ray up to the back of the lens.
6. Draw a line parallel to the main axis from the tip of the third incident ray.
7. The intersection of the extension of the 3 rays is the tip of your image. Draw a perpendicular line from it to the main axis. Now, you get the image!
RAY DIAGRAM FOR DIVERGING LENSES:
1. First incident ray: Parallel line to axis, from tip to the lens.
2. Second incident ray: Draw a line from the tip of the object to the center of the lens, or the intersection of your axes.
3. Third incident ray: Draw a line from the tip of the object to the focal point at the back of the lens.
4. Draw a line passing through the focal point in front of the lens and passing through the point the first ray of incidence touches the lens.
5. From the point where the second incident ray meets the lens, draw a line parallel to the main axis.
6. Just extend the third incident ray.
7. Now, see where the 3 extensions intersect? There's the point that is the tip of your image. Draw a perpendicular line from the axis to the intersection, and, yeah, the image!
Whew! That was a long one!!!Labels: Required Post
posted by Karen Ann Labsan at 3:01 AM
... DROP DEAD ...
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