Miscellaneous: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Miscellaneous. Understanding the underlying formula is key to arriving at the correct answer below:

The limit of resolution of a telescope is given by $\Delta\theta = \frac{1.22 \lambda}{D}$. Substituting the values, $\Delta\theta = \frac{1.22 \times 600 \times 10^{-9}}{2} = 1.22 \times 300 \times 10^{-9} = 3.66 \times 10^{-7} rad$.