NEET Physics Optical Instruments MCQ Question
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?
The magnifying power will increase.
The magnifying power will decrease.
The magnifying power will remain the same.
The magnifying power will become zero.
Correct Answer
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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