Question

The magnifying power of a simple microscope can be increased, if we use eye-piece of

• A. Higher focal length
• B. Smaller focal length
• C. Higher diameter
• D. Smaller diameter

Answer 1

Answer: (B)

Smaller focal length

Answer 2

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

Smaller the focal length, higher the magnifying power.