What is the minimum angular separation between two stars if a telescope is used to observe them with an objective of aperture 20 cm ? The wavelength of light is 5900 A .

Data : D=20 cm=0.2 m, =5900 A =5.9 10^ -7 m =1.22 D = 1.22 5.9 10^ -7 0.2 =3.599 10^ -6 r a d This is the required angular separation.

What is the minimum angular separation between two stars if a tel…

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