A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometers from two objects. The minimum distance between these two objects, which can be resolved by the teles

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A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometers 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 A ˚ , is of the order of:

TestHub · Accepted Answer

According to the question: θ = a 1.22 ​ λ ∴ D d ​ = a λ ​ ⇒ a ′ = a λ D ​ a = 10 × 1 0 − 2 5000 × 1 0 − 10 × 1 0 3 ​ = 5 mm ​

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