
Answer & explanation
Correct answer: option 2
$\text{For a simple Microscope Magnification }M = 1 + \frac{D}{f}$
If we use eye piece of smaller focal length, the magnifying power of a simple microscope can be increased.

Correct answer: option 2
$\text{For a simple Microscope Magnification }M = 1 + \frac{D}{f}$
If we use eye piece of smaller focal length, the magnifying power of a simple microscope can be increased.