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is the centre part of the iris....

________ is the centre part of the iris.

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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))
  1. Eye lens is in nature.

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  2. The ability of the eye lens to focus nearby as wll as the distant obje...

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  3. is the centre part of the iris.

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  4. Power of accommodation is achieved by changing the of the eye lens.

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  5. The least distance of distinct vision is .

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

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  7. Cylindrical lenses are also called as lenses.

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

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

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

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

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

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  13. The least count of a travelling microscope is

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

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  15. The first telescope was invented by in 1608.

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  16. made a telescope to observe distant stars.

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

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

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

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  20. is know as long sightedness.

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