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The magnifying power of an astronomical ...

The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is `54 cm`. The focal length of eye lens and objective lens will be respectively

A

`6` cm and `48` cm

B

`48` cm and `6` cm

C

`8` cm and `64` cm

D

`64` cm and `8` cm

Text Solution

Verified by Experts

The correct Answer is:
A
`M=(f_(0))/(f_(e))=8`. `L=f_(0)+f_(e)=54` cm
`:.f_(e)=6` cm, `f_(0)=48` cm.
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