A telescope of aperture 3x10^-2 m diameter is focused on a window at 80 m distance fitted with a wire mesh of spacing 2x10^-3 m.
Given lamda= 5.5x10^-7 m, which is true:
a) Yes possible with same aperture size
b) no, not possible
c) possible also when aperture half of present diameter
d) Data not sufficient.