Recent content by LeeLoo

Homework Statement Hey, I'm having trouble with this question on microscopes. A microscope is made up of an objective of power +100D and an eyepiece of power +50D, the two lenses being separated by 18cm. How far in front of the objective must an object be placed if the image of the object...

Oh, yeah, the law is actually n/l + F = n'/l' but i thought people could abbreviate it like that. anyway, yay, i know how to do the question now! 1/l' + 1/l = F l' +l =1m l' = 1 - l so sub that in and get two answers for 'l' which are the lens positions :D and magnification= l'/l so...

1. A lamp and a screen are 1m apart and a +4.5 D thin lens is mounted between them. Where must the lens be placed in order to produce a sharp image on the screen, and what will be the magnification? 2. Gauss Law: L' = L + F 3. I attempted this question by using the Gauss Law but I...