Physics-Optical Instruments
NEET Physics Optical Instruments MCQ Question
Type: MCQ-diagram based-Medium-Class 12
In the diagram of a refracting telescope shown above, if the focal length of the objective lens is increased while keeping the eyepiece focal length constant, how will the magnifying power of the telescope change?
A
The magnifying power will increase.
B
The magnifying power will decrease.
C
The magnifying power will remain the same.
D
The magnifying power will become zero.
Correct Answer
Option A
Detailed Explanation
The magnifying power of a telescope is given by the ratio of the focal length of the objective to the focal length of the eyepiece. Increasing the focal length of the objective results in a higher magnifying power.
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