An astronomical telescope has magnifying power 6 for distant objects. The separation between objective and the eye piece is 42 cm and the final image is formed at infinity. The focal length f 0 of o

Question

An astronomical telescope has magnifying power 6 for distant objects. The separation between objective and the eye piece is 42 cm and the final image is formed at infinity. The focal length $f_{0}$ of objective and focal length $f_{e}$ of eye-piece are (in cm) :-

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Answer:

A

Solution:

$f_{0} + f_{e} = 42$

$\frac{f _{0}}{f _{e}} = 6$

TestHub · Accepted Answer

f 0 ​ + f e ​ = 42 f e ​ f 0 ​ ​ = 6

Physics - Geometrical Optics Question with Solution | TestHub

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