Light- concave and convex mirrors
Concave spherical mirror
a mirror whose reflection surface is a segment of the inside of the sphere
What are curved mirrors able to create?
create images that are not the same size as the object
Radius of curvature
the distance from the mirror's surface to the center of curvature of the mirror
focal point
the point halfway between the center of curvature and the center of the mirror
What can you create with a concave mirror?
different sizes and types of images as you move the object towards the mirror
what does the type of concave mirror image depend on?
the amount of curvature of the mirror and the distance between the object and the mirror
When is a real image from a concave mirror formed?
when rays of light actually pass through a point on the image, they can be projected onto a board or screen
When is a virtual image from a concave mirror formed?
when rays of light appear to come inside /behind the mirror
Characteristics of concave real images
always inverted/upsidedown and always form in front of the mirror
Characteristics of virtual images
always upright and behind the mirror
Convex spherical mirror
a mirror whose reflecting surface is a segment of the outside of a sphere
what do convex mirrors provide
a wider feild of view, objects are closer than they apear (rear view mirrors)
what kind of image do convex mirrors produce?
virtual, upright images that apear smaller
what are ray diagrams used for?
create an image of objects that are reflected with concave and convex mirrors
Ray tracing diagram for concave mirrors
1) Line A from the tip of the head, straight to mirror
2) Line B from where Line A hits the mirror through F point
3) Line C from head thru focal point to mirror
4) Line D from where Line C hits straight thru line B
Ray tracing diagrams convex Mirrors
1) Line A from the tip of the head, straight to mirror
2) Line B from where Line A hits the mirror through F point
3) Line C from head thru focal point to mirror
4) Line D from where Line C hits straight thru line B
Concave mirror w/ object between the f pot and the mirror
Same except it goes over on the other side of the mirror
how many reference points are used to find the image point for spherical mirrors
two or three