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An astronomical telescope has angular ma...

An astronomical telescope has angular magnification m=7 for distant object. Distance between objective and eyepeice is 40 cm. final image is formed at infinitely focal length of objective and eyepeice respectively are

A

35 cm, 5 cm

B

28 cm, 14 cm

C

5 cm, 35 cm

D

70 cm, 10 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`f_(0)+f_(e)=40`
`7=(f_(0))/(f_(e))impliesf_(0)=35cm`
`f_(e)=5cm`
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