First slide

The optical instruments

Question

If the focal length of the objective lens is increased then

Moderate

A

Magnifying power of microscope will increase but that of telescope will decrease
B

Magnifying power of microscope and telescope both will increase
C

Magnifying power of microscope and telescope both will decrease
D

Magnifying power of microscope will decrease but that of telescope will increase

Solution

A microscope consists of lens of small focal lengths. A telescope consists of objective lens of large focal length.

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