Question

The magnifying power of a simple microscope is $6$ The focal length of its in meters will be, if least distance of distinct vision is $25cm$

• A. $0.05$
• B. $0.06$
• C. $0.25$
• D. $0.12$

Answer 1

Answer: (A)

$0.05$

As we know,

$m=1+\frac{D}{f}\Rightarrow 6=1+\frac{25}{f}\Rightarrow f=5cm=0.05m$