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The focal length of the objective lens of a telescope is 50 cm . If the magnification of the telescope is 25 , then the focal length of the eye-piece is

Options

  1. A12.5 cm
  2. B5 cm
  3. C2 cm
  4. D10 cm

Correct answer

C. 2 cm

Step-by-step solution

Magnification M= | f₀ f_e | f _ e = 50 25 =2 ~cm

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