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Cylindrical lenses are also called as l...

Cylindrical lenses are also called as _________ lenses.

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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))
  1. The least distance of distinct vision is .

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  2. The tiny dust particles present in the air of the room scatter the bea...

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  3. Cylindrical lenses are also called as lenses.

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  4. Both the defects of vision-myopia as well as hypermetropia can be corr...

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  5. A microsocpe has a convex lens of a short focal length.

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  6. Magnification power of microscope has to times more magnification po...

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  7. Compound microscope has to times more magnification power than simpl...

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  8. A microscope is used to measure very small length with high degree of...

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  9. The least count of a travelling microscope is

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  10. is an optical instrument used to see distant objects.

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  11. The first telescope was invented by in 1608.

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  12. made a telescope to observe distant stars.

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  13. The invented telescope was similar to the astronomical telescope.

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  14. A microscope works based on the principle of vernier.

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  15. The minimum distance required to see the objects distinctly without st...

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  16. is know as long sightedness.

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  17. Aged person cannot see the nearby objects . It is called .

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  18. mirrors are used in relfecting telescope.

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  19. Galilean telescope, Keplerian telescope are some of the example of te...

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  20. The ratio of speed of light in vaccum to the speed of light medium is ...

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