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

Question

A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometre from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is 5000Å , is of the order of

Accepted Answer

Correct answer: C. (c) : Resolution of telescope d θ=1.2 2 λD=1.2 2× 5 0 0 0×1 0^−81 0 x=d θ×d

$A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometre from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is 5000 A ˚, is of the order of$

Solution

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