Physics

Problem

A compound microscope is assembled with an objective of focal length

0.40\,\text{cm}

and an eyepiece of focal length

2.0\,\text{cm}

. The object is placed

0.45\,\text{cm}

from the objective, and the eyepiece is adjusted so that the final image is formed at the near point (

25\,\text{cm}

) of the observer. The magnifying power of the microscope is approximately a)

100

108

122

216