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In an astronomical telescope, focal leng...

In an astronomical telescope, focal length of objective lens is `75 cm` and that of eye piece is `5 cm` . Calculate the magnifying power and the distance between the two lenses, when final image of distant object is seen at a distance of `25 cm` from the eye.

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The correct Answer is:
(a) `0.0417m` (b) `0.7917 m`
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PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Unsolved Numerical Problems
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  9. A Keplerian telescope with magnification T = 15 was submerged into wat...

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  10. A man stands on vertical tower of height 20 cm. Calculate the distanc...

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  11. The redius of curvature of the convex face of a plano-convex lens is 1...

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  12. An object is at a distance of a=36 cm from a lens with a focal length ...

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  13. The focal length of a thin biconvex lens is 20 cm. When an object is m...

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  14. An object is placed 20 cm to the left of a convex lens of focal length...

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  15. A glass sphere with centre O is shown in the figure, AOB and COD are t...

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  16. A hollow sphere of glass of inner and outer radii R and 2R respectivel...

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