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What is a Cassegrain telescope?...

What is a Cassegrain telescope?

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A Cassegrain telescope uses two mirrors as shown in Fig. 9.33. Such a telescope is built with the mirrors 20mm apart. If the radius of curvature of the large mirror is 220mm and the small mirror is 140mm, where will the final image of an object at infinity be?

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MODERN PUBLICATION-Optical Instruments-EXERCISE
  1. What is a Cassegrain telescope?

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  2. Explain briefly the structure of human eye.

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  3. Give a labelled diagram of the eye and write the function of its main ...

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  4. What is myopia?What are its causes ?Name the type of the lens to corr...

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  5. What is hypermetropia?

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  6. What is Accomodation of eye? Write various defects of vision and their...

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  7. What is th magnification produced by a single convex lens used as simp...

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  8. Explain the working of simple microscope and find an expression for it...

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  9. Draw a ray diagram to show image formation in a compound microscope. F...

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  10. Explain the working of simple microscope and find an expression for it...

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  11. Explain the working of simple microscope and find an expression for it...

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  12. Explain the working of simple microscope and find an expression for it...

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  13. Explain the working of simple microscope and find an expression for it...

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  14. What is a microscope? Explain simple microscope. Calculate its magnify...

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  15. Draw a labelled ray diagram of a compound microscope. Explain its work...

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  16. Explain the working of simple microscope and find an expression for it...

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  17. Define the magnifying power of compound microscope.

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  18. Draw a ray diagram to show image formation in a compound microscope. F...

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  19. Draw a labelled ray diagram of a compound microscope. Explain its work...

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  20. Draw a ray diagram to show image formation in a compound microscope. F...

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  21. with the help of labelled diagram, explain the formation of final imag...

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