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The magnifying power of a compound microscope increase with

Options

  1. Athe focal length of objective lens is increased and that of eye lens is decreased
  2. Bthe focal length of eye lens is increased and that of objective lens is decreased
  3. Cfocal lengths of both objects and eye-piece are increased
  4. Dfocal lengths of both objects and eye-piece are decreased.

Correct answer

D. focal lengths of both objects and eye-piece are decreased.

Step-by-step solution

Magnifying power of compound microscope M=- v_o u_o (1+ D f_e )=- L f_o (1+ D f_e )

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