there is still something wrong with it i can't figure out what i was thinking maybe the sign has to be negetive since the final image is going to be to the left of the second lens meaning
(1/Di1)-(1/14.8-Di)=(1/4.92)
hmm. by saying its the sum of the two distances I am assuming ur saying that its the distance between the two lenses of the compund microscope so i guess i can plug that into my 2nd equation making it look like this
(1/Di1)+(1/14.8-Di1)=(1/4.92)
am i close :D. by the way how do u know to reply...
i think i see what you are saying but now I am more confused. this is how i have started to set it up again. what i don't seem to understand is how to use the 14.8 which is the length of the barrel. I am not sure if I am suppose to use it to find Df (distance of final image)or something...
Homework Statement
The barrel of a compound microscope is 14.8 cm in length. The specimen will be mounted 1.03 cm from the objective, and the eyepiece has a 4.92 cm focal length. Determine the focal length of the objective lens
Homework Equations
(1/Do)+(1/Di)= (1/f)
The Attempt...
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