The distance between an object and its image formed by a diverging lens is 55.0 cm?

K

kristen

New member
Calculate the image distance.
I am having a hard time with this problem, any input is appreciated
he focal length of the lens is -205 cm.
 
if you had focal length (f)
then you could let Di= X and Do= X+55 because image and object are on the same side of the lens
and
1/f = 1/Di + 1/Do
1/f = 1/X + 1/(X+55)
put in f and solve for X
btw for a diverging lens f is negative and Di will be negative, too

I guess if you don't have f
then you could solve for X in terms of f
 
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