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Question
A telescope has an objective lens of 10 cm diameter and is situated at a distance of 1km for two objects. The minimum distance between these two objects, which can be resolved by the telesope, when the mean wavelength of light is 5000Å is of the order of
A telescope has an objective lens of 10 cm diameter and is situated at a distance of 1km for two objects. The minimum distance between these two objects, which can be resolved by the telesope, when the mean wavelength of light is 5000Å is of the order of
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Solution
The correct option is A 5 mm
Resolution power =dλD=1000×5000×10−1010×10−2=5mm
Resolution power =dλD=1000×5000×10−1010×10−2=5mm
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