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If the focal length of objective lens is increased then magnifying power of:

  1. A
    microscope will increase but that of telescope decrease
  2. B
    microscope and telescope both will increase
  3. C
    microscope and telescope both will decrease
  4. D
    microscope will decrease but that of telescope will increase

Solution & Step-by-step Explanation

1. Magnifying power of a telescope . Thus, . Increasing increases .2. Magnifying power of a microscope . Thus, . Increasing decreases .Therefore, magnifying power of a microscope decreases and that of a telescope increases.

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If the focal length of objective lens is increased then magnifying power of:
A
microscope will increase but that of telescope decrease
B
microscope and telescope both will increase
C
microscope and telescope both will decrease
D
microscope will decrease but that of telescope will increase

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