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:

Angular magnification is $M = \frac{f_o}{f_e}$, requiring a large focal length $f_o$ for the objective. Angular resolution is inversely proportional to the resolving limit $\Delta\theta = \frac{1.22\lambda}{D}$, requiring a large aperture diameter $D$ for high resolution.