Optics Question 368
Question: Two points separated by a distance of 0.1 mm can just be resolved in a microscope when a light of wavelength 6000 Å is used. If the light of wavelength 4800Å is used this limit of resolution becomes
[UPSEAT 2002]
Options:
A) 0.08 mm
B) 0.10 mm
C) 0.12 mm
D) 0.06 mm
Show Answer
Answer:
Correct Answer: A
Solution:
Resolving limit $ x\propto \lambda \Rightarrow \frac{x _{1}}{x _{2}}=\frac{{\lambda _{1}}}{{\lambda _{2}}}\Rightarrow \frac{0.1}{x _{2}}=\frac{6000}{4800} $
$ \Rightarrow x _{2}=0.08\ mm $
