Optics Question 367
Question: The magnifying power of a simple microscope is 6. The focal length of its lens in metres will be, if least distance of distinct vision is 25 $ cm $
[MP PMT 2001]
Options:
A) 0.05
B) 0.06
C) 0.25
D) 0.12
Show Answer
Answer:
Correct Answer: A
Solution:
$ m=1+\frac{D}{f}\Rightarrow 6=1+\frac{25}{f}\Rightarrow f=5\ cm=0.05\ m $
