Optics Question 401
Question: The diameter of the objective lens of a telescope is 5.0 m and wavelength of light is 6000 Å. The limit of resolution of this telescope will be
[MP PMT 1994]
Options:
A) 0.03 sec
B) 3.03 sec
C) 0.06 sec
D) 0.15 sec
Show Answer
Answer:
Correct Answer: A
Solution:
Limit of resolution $ =\frac{1.22\ \lambda }{a}\times \frac{180}{\pi } $ (in degree) $ ={{( \frac{1.22\times (6000\times {{10}^{-10}})}{5}\times \frac{180}{\pi } )}^{o}}=0.03\ sec $
