Thin Lens And Lens Maker Equations Video Lessons

Concept

# Problem: You have lenses with the following focal lengths: f = 25 mm, 50 mm, 100 mm, and 200 mm.  Which pair of lenses would you use to get the highest-power microscope? Check all that apply. 25 mm 50 mm 100 mm 200 mm

###### FREE Expert Solution

Power of a lens:

$\overline{){\mathbf{D}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{f}}}$

We need two lenses with the greatest power.

Power is inversely proportional to the focal length.

Thus, they should have the least focal length.

###### Problem Details

You have lenses with the following focal lengths: f = 25 mm, 50 mm, 100 mm, and 200 mm.

Which pair of lenses would you use to get the highest-power microscope? Check all that apply. 25 mm 50 mm 100 mm 200 mm