NEET-XII-Physics
neet 2020 questions with solutions year:2020
- #33Assume 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 :
(A) `` 3.66 \times 10^{-7} \,rad ``
(B) `` 1.83 \times 10^{-7} \,rad ``
(C) `` 7.32 \times 10^{-7} \,rad ``
(D) `` 6.00 \times 10^{-7} \,rad ``
digAnsr: AAns : Limit of resolution,
`` \theta_{R}=1.22 \frac{\lambda}{d} `` ;
`` \lambda=600 \times 10^{-9}\,m ``
`` d=2\,m ``
`` \theta_{R}=\frac{1.22 \times 600 \times 10^{-9}}{2} ``
`` \theta_{R}=3.66 \times 10^{-7} `` rad