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JEE Main 2019 (Online) 8th April Evening Slot
MCQ (Single Correct Answer)
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Calculate the limit of resolution of a telescope objective having a diameter of 200 cm, if it has to detect light of wavelength 500 nm coming from a star :-
A
610 × 10–9 radian
B
457.5 × 10–9 radian
C
305 × 10–9 radian
D
152.5 × 10–9 radian
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