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The optical length of an astronomical te...

The optical length of an astronomical telescope with magnifying power of 10, for normal vision is 44cm. What is focal length of the objective?

A

4 cm

B

40 cm

C

44 cm

D

440 cm

Text Solution

Verified by Experts

The correct Answer is:
B
`f_(O)/f=10andf_(o)+f_(E)=44" "thereforef_(o)=40cm`
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