Optics Question 424
Question: The resolving power of a telescope whose lens has a diameter of 1.22 m for a wavelength of 5000 Å is
[Kerala PMT 2002]
Options:
A) $ 2\times 10^{5} $
B) $ 2\times 10^{6} $
C) $ 2\times 10^{2} $
D) $ 2\times 10^{4} $
Show Answer
Answer:
Correct Answer: B
Solution:
Resolving power $ =\frac{d}{1.22\ \lambda }=\frac{1.22}{1.22\times 5000\times {{10}^{-10}}}=2\times 10^{6} $
