The diameter of the objective lens of a telescope is $250\, cm$. For light of wavelength $600\, nm$ coming from a distant object, the limit of resolution of the telescope is close to:

  • A
    $1.5 \times 10^{-7}\, rad$
  • B
    $2.0 \times 10^{-7}\, rad$
  • C
    $3.0 \times 10^{-7}\, rad$
  • D
    $4.5 \times 10^{-7}\, rad$

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