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A small telescope has an objective lens of focal length 144 cm and an eyepiece of focal length 6.0 cm. What is the magnifying power of the telescope? What is the separation between the objective and the eyepiece?

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The correct Answer is:
`24;150cm`
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RESONANCE ENGLISH-GEOMATRICAL OPTICS -Exercise-1
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  2. A lens placed between a candle and a fixed screen forms a real tr...

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  3. A pin of length 1cm lies along the principle axis of a converging len...

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  4. The radius of the sun is 0.75xx10^(8)m and its distance from the eart...

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  5. A 5.0 diopter lens forms a virtual image which is 4 times the object p...

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  6. A diverging lens of focal length 20 cm and a converging mirror of foca...

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  7. A converging lens and a diverging mirror are placed at a separation of...

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  8. A point object is placed on the principal axis of a convex lens (f = 1...

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  9. A convex lens of focal length 20 cm and a concave lens of focal length...

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  10. Two identical thin converging lenses brought in contact so that thei...

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  11. A point object is placed at a distance of 15 cm from a convex lens. Th...

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  12. The convex surface of a thin concave-convex lens of glass of refractiv...

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  13. A certain material has refractive indices 1.56, 1.60 and 1.68 for red,...

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  14. A flint glass prism and a crown glass prism are to be combined in such...

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  15. Three thin prisms are combined as shown in figure. The refractive indi...

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  16. The focal lengths of a convex lens for red, yellow and violet rays are...

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  17. A thin prism of angle 6.0^@, omega'=0.07 and muy'=1.50 is combined wit...

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  18. A small telescope has an objective lens of focal length 144 cm and an ...

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  19. An angular magnification (magnifying power) of 30 X is desired using a...

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  20. A compound microscope has an objective of focal length 2.0 cm and an e...

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