NEET 2004 Physics question
A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is 5000 , is of the order of-
Answer: (2)
Solution
The limit of resolution of the objective is (exact: ). If is the separation of the objects at distance , $θ =
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