If the focal length of the objective lens is increased then
Magnifying power of microscope will increase but that of telescope will decrease
Magnifying power of microscope and telescope both will increase
Magnifying power of microscope and telescope both will decrease
The magnifying power of microscope will decrease but that of the telescope will increase
A
Magnifying power of microscope will increase but that of telescope will decrease
B
Magnifying power of microscope and telescope both will decrease
C
The magnifying power of microscope will decrease but that of the telescope will increase
D
Magnifying power of microscope and telescope both will increase
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Solution
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The correct option is D The magnifying power of microscope will decrease but that of the telescope will increase A microscope consists of a lens of small focal lengths. A telescope consists of an objective lens of a large focal length.
For a microscope,
m=Lf0×Dfe and
FOr telescope,
m=fofe
Therefore, The magnifying power of microscope will decrease but that of the telescope will increase.
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