- #1

DharshanT

- 1

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- Homework Statement
- How to find the magnification of a ball lens?

- Relevant Equations
- Please see image below.

I don't really know how to relate the effective and back focal lengths for magnification purposes. Literature review suggests that a lens of 1mm diameter can have a magnification of 350x-400x, but I don't really know the calculations behind it. Please advise.