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 :
(1) ``3.66×10^{-7}`` rad
(2)`` 1.83×10^{-7}`` rad
(3)`` 7.32×10^{-7}`` rad
(4)`` 6.00×10^{-7}`` rad