An astronomical telescope has a magnifying power 10. The focal length – McqOptions

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1.	An astronomical telescope has a magnifying power 10. The focal length of eyepiece is 20 cm. The focal length of objective is [MP PMT 2002, 03; Pb. PET 2004]
A.	2 cm
B.	200 cm
C.	\[\frac{1}{2}cm\]
D.	\[\frac{1}{200}cm\]
Answer» C. \[\frac{1}{2}cm\]

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