Question

The expression shown below is for ___. * n1-n2/R = n2/v - n1/v
$\frac{n1 - n2}{r} = \frac{n2}{v} - \frac{n1}{v}$
1.Refraction at single spherical surface

2.Lens Makers equation

3.Magnifying power of a simple microscope

4.Magnifying power of a compound microscope
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Answer 1

Answer:

mark brainlist

Explanation:

answer 3