Mirror Equation

Question 1

For focal length what if its positive or negative?

Answer 1

Positive: concave mirror
Negative: convex mirror

Question 2

For the radius of curvature, what if its positive or negative?

Answer 2

Positive: concave
Negative: convex

Question 3

For the image of the distance from the vertex, what if the image is positive or negative?

Answer 3

Positive: real image
Negative: virtual image

Question 4

Object distance from the vertex:

Answer 4

Always positive

Question 5

The formula to know the size and if its upright or inverted

Answer 5

M= |-di/do|

Question 6

What is the mirror/lens equation?

Answer 6

1/do + 1/di= 1/f = 1/r