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An astronomical telescope has an angular...

An astronomical telescope has an angular magnification of magnitude `5` for distant object. The separation between the objective and eyepiece is `36cm` and the final image is formed at infinity. Determine the focal length of objective and eyepiece.

A

`f_(0)`=45 cm and `f_(0)`=-9 cm

B

`f_(0)=` 50 cm and `f_(0)=`10 cm

C

`f_(0)=7.2 cm` and `f_(0)=5cm`

D

`f_(0)`=30 cm and `f_(0)`=6cm

Text Solution

Verified by Experts

The correct Answer is:
D
`M=(f_(o))/(f_(theta))=5`
`f_(o)+f_(theta)=36`
`f_(theta)=6 cm`
`f_(o)=30 cm`
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