Q. Least distance of distinct vision is $25\ cm$. Magnifying power of simple microscope of focal length $5\ cm$ is
A) $1/5$
B) 5
C) $1/6$
D) 6
Explanation
(d) In general, the simple microscope is used with image at $D$, hence
$m = 1 + \frac{D}{f} = 1 + \frac{25}{5} = 6$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.