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NEET 2020 Physics question on Wave Optics

Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
  1. A.
    1.83×10−71.83 \times 10^{-7} rad
  2. B.
    7.32×10−77.32 \times 10^{-7} rad
  3. C.
    6.00×10−76.00 \times 10^{-7} rad
  4. D.
    3.66×10−73.66 \times 10^{-7} rad
Show answer

Correct option: D

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