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JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

In normal adjustment, magnifying power of an astronomical telescope is 6 and length of telescope is

21 \mathrm{~cm}

. The focal length of objective and eye piece are

View answer and explanation

Correct option: A

18 \mathrm{~cm}, 3 \mathrm{~cm}

Option A (

18 \mathrm{~cm}, 3 \mathrm{~cm}

) is correct because it satisfies both the magnification and length equations for a telescope in normal adjustment.

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