- #1
bananan
- 176
- 0
I'm having a little problem with this question.. my brain is too small.
"A converging lens has a focal length of 10 cm. A screen is placed 30 cm from an object. Where should the lens be placed, in relation to the object, to produce a focused image?"
I've started with the formula
1/do + 1/di = 1/F
1/do + 1/di = 1/10
At this point I don't have a distance for do or di, because they're relative to the lens, and the lens position is the variable. Can someone push me in the right direction?
"A converging lens has a focal length of 10 cm. A screen is placed 30 cm from an object. Where should the lens be placed, in relation to the object, to produce a focused image?"
I've started with the formula
1/do + 1/di = 1/F
1/do + 1/di = 1/10
At this point I don't have a distance for do or di, because they're relative to the lens, and the lens position is the variable. Can someone push me in the right direction?