mirror imaging Flashcards
1
Q
image from plane mirror
A
- virtual (located behind the mirror)
- equal size to object (M=1)
- erect
2
Q
mirror magnification
A
M=-i/o NEGATIVE
3
Q
convex mirror
A
negative optical power
4
Q
concave mirror
A
positive optical power
5
Q
focal point
A
1/2r, half the distance of the radius
6
Q
Power
A
-1/f=-2/R NEGATIVE
7
Q
Focal length of a spherical mirror
A
- always equal to half the r of curvature
- to the right, - to left
- has same algebraic sign with the radius of curvature
8
Q
convez mirror with focal length f=20cm has optical power of…
A
-5D
9
Q
a concave mirror with optical power P=+20D has a focal length…
A
-5cm
10
Q
concave mirror OP
A
+
11
Q
convex mirror OP
A
negative
12
Q
Plane mirror OP
A
zero
13
Q
Image mergence for a spherical mirror
A
same but NEGATIVE
14
Q
convex mirrors
A
- ray parallel with the principal optical axis is reflected as if it originated from the focus
- ray targeting the focus after reflection becomes parallel to the principle optical axis
- ray that crosses the mirror center of curvature is retro-reflected
ONLY ONE FOCAL POINT
15
Q
Concave mirrors
A
- ray parallel with the optical axis is reflected towards the focus
- ray passing through the focus after reflection becomes parallel to the principal optical axis
- Ray that crosses the mirror center of curvature is retro-refelcted
