Mirror formula

 The mirror formula is:


1/f = 1/do + 1/di


Where:

- f = Focal length

- do = Object distance

- di = Image distance


This formula helps calculate the position and size of the image formed by a mirror, whether it's concave or convex.


Sign Convention:

- Concave mirrors have a negative focal length (f).

- Convex mirrors have a positive focal length (f).

- Object distance (do) is always negative if the object is in front of the mirror.

- Image distance (di) is positive if the image is behind the mirror, and negative if it's in front.

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