Question

The normal magnifying power of a simple microscope is 6. The focal length of the convex lens uses is

• A. 50 cm
• B. 5 m
• C. 0.05 m
• D. 0.5 cm

Answer 1

Answer: (C)

0.05 m

Answer 2

$\text { As we know, }\\\ m =1+\frac{ D }{ f } \Rightarrow 6=1+\frac{25}{ f } \Rightarrow f =5 cm =0.05 m$