Physics

Problem

The value of numerical aperture of the objective lens of a microscope is 1.25. If light of wavelength

5000 \text{\AA}

is used, what is the minimum separation between two points to be seen as distinct? a.

0.24 \mu\text{m}

0.38 \mu\text{m}

0.12 \mu\text{m}

0.48 \mu\text{m}