A Galilean telescope has an objective of focal length ${\rm{100 }}\,{\rm{cm}}$ and magnifying power ${\rm{50}}$. The distance between the two lenses in normal

JEE PHYSICS MCQ: RAY OPTICS

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A Galilean telescope has an objective of focal length

\mathrm{100 }\,\mathrm{cm}

and magnifying power

\mathrm{50}

. The distance between the two lenses in normal

View answer and explanation

Correct option: A

\mathrm{98 }\,\mathrm{cm}

Option A (

\mathrm{98 }\,\mathrm{cm}

) is correct because the distance between the lenses in a Galilean telescope in normal adjustment is the difference between the focal lengths of the objective and eyepiece.

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