The diameter of the objective of a telescope is $1 \ m$. Its resolving limit for light of wavelength $4538 \ \mathring{A}$ will be:
- A$5.54 \times 10^{-7} \ \text{rad}$
- B$2.54 \times 10^{-4} \ \text{rad}$
- C$6.54 \times 10^{-7} \ \text{rad}$
- DNone of these
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