- #1
alivedude
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Homework Statement
So I have this system of lenses with this problem:
First lens: focal length ##f_1=50 mm##
Second lens : focal length ##f_2=400 mm##
Distance between them ##d=600mm##
A small light source is placed at the focal point for the first lens. At the focal point for the second lens we have an image of the light source, what is the magnification?
Homework Equations
Lens formula: ##\frac{1}{s}+\frac{1}{s'}=\frac{1}{f}##
The Attempt at a Solution
Since we have the objekt at the first focal point the image of that lens is the infinity. This implies that the objekt for the second lens is the infinity and that would give us the image at the second focal point to the right of the second lens. Is this correct? How would I continue to find the magnification of this?