Just read the sticky. I know this looks like a homework question but its not, but I guess it should have been posted in the other board. I don't have the ability to move it or I would. Sorry about that.
A Huygens ocular is constructed of two thin lenses of focal lengths 10cm and 5cm respectively, separated by 7.5cm. The ocular is used in an astronomical telescope whose objective is 30cm to the left of the front lens of the ocular.
I need to find the position of the exit pupil, and then find...
If the far point of a nearsighted person is 1m in front of their eyes:
a) What power should their spectacles have, so that they may see distinctly as object at infinity.
b) If when wearing these glasses, their near point is at 0.25m, where would it be without them?
So for a)...