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NEET 2020 (Phase 1) · Resolving Power

Resolving Power question from NEET 2020 (Phase 1)

Q14NEET 2020 · PHASE 1Easy

Resolving Power

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:

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Answer: (d)

  1. Limit of resolution θ=1.22λD\theta = \dfrac{1.22\lambda}{D}.
  2. θ=1.22×600×10−92\theta = \dfrac{1.22 \times 600\times10^{-9}}{2}
  3. θ=3.66×10−7\theta = 3.66\times10^{-7} rad
  4. So the answer is (d) 3.66×10−73.66\times10^{-7} rad.
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