Q. Magnification at least distance of distinct vision of a simple microscope having its focal length 5 cm is
A) 2
B) 4
C) 5
D) 6
Explanation
(d) If final image is formed at least distance of distinct vision, magnification
$= 1 + \frac{D}{f}$
Or magnification
$= 1 + \left( \frac{25}{5} \right) = 6$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.