- #1
michaelw
- 80
- 0
Hello
Im really confused on the signs for f, do and di in this equation..
Please tell me if I am correct.. but here is how i presently understand if
For definition sake, the 'front' of a mirror is where you would normally stand to look in a mirror, and the 'front' of a lens (like a camera) is where the objects are that you want to take a picture of.
f is (+) for a converging lens/mirror, (-) for diverging. always.
do is (+) when its in the 'front'
di is (+) when it is a real image
is this right?
Im really confused on the signs for f, do and di in this equation..
Please tell me if I am correct.. but here is how i presently understand if
For definition sake, the 'front' of a mirror is where you would normally stand to look in a mirror, and the 'front' of a lens (like a camera) is where the objects are that you want to take a picture of.
f is (+) for a converging lens/mirror, (-) for diverging. always.
do is (+) when its in the 'front'
di is (+) when it is a real image
is this right?