Question

The image of an object is formed at the least distance of distinct vision from the lens of a simple microscope of focal length $2.5cm$. Its magnifying power is:

• A. $2.5$
• B. $5$
• C. $10$
• D. $11$

Answer 1

The correct option is D $11$

Magnification of simple microscope is:

$m=1+\frac{D}{f}$

$=1+\frac{25}{2.5}$

$=11$