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Question
On increasing the focal length of the objective, the magnifying power ______.
Options
of microscope will increase, of telescope will decrease.
of both will increase.
of both will decrease.
of microscope will decrease, of telescope will increase.
MCQ
Fill in the Blanks
Solution
On increasing the focal length of the objective, the magnifying power of microscope will decrease, of telescope will increase.
Explanation:
Magnifying power of microscope,
`"M"_"m" = ("L"/"f"_0)("D"/"f"_"e")`
`"M"_"m" prop 1/"f"_0`
Magnifying power of telescope `"m"_"t" = "f"_0/"f"_"e"`
mt ∝ f0.
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