Q 12-10-008NEETNEET 2020Top questionEasy
Assume that light of wavelength $600$ nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of $2$ m is :
Answer: (A) $3.66 \times 10^{-7}$ rad
$$\Delta\theta = \frac{1.22\lambda}{D} = \frac{1.22 \times 600 \times 10^{-9}}{2} = 3.66 \times 10^{-7}\ \text{rad}$$
Solution by Sreeraj P, M.Sc Physics