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NDA2011General AbilityGeneral ScienceActual

Which one among the following is the major cause of blurring and unsharp images of objects observed through very large telescope at the extreme limit of magnification?

Options

  1. AAir turbulence of earth's atmosphere
  2. BPoor optical polish achievable on large mirrors
  3. CPoor tracking capacities of telescopes
  4. DVarying density of air in the Earth's atmosphere

Correct answer

C. Poor tracking capacities of telescopes

Step-by-step solution

The correct answer is option (C).

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