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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))
- Power of accommodation is achieved by changing the of the eye lens.
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- The least distance of distinct vision is .
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- The tiny dust particles present in the air of the room scatter the bea...
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- Cylindrical lenses are also called as lenses.
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- Both the defects of vision-myopia as well as hypermetropia can be corr...
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- A microsocpe has a convex lens of a short focal length.
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- Magnification power of microscope has to times more magnification po...
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- Compound microscope has to times more magnification power than simpl...
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- A microscope is used to measure very small length with high degree of...
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- The least count of a travelling microscope is
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- is an optical instrument used to see distant objects.
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- The first telescope was invented by in 1608.
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- made a telescope to observe distant stars.
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- The invented telescope was similar to the astronomical telescope.
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- A microscope works based on the principle of vernier.
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- The minimum distance required to see the objects distinctly without st...
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- is know as long sightedness.
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- Aged person cannot see the nearby objects . It is called .
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- mirrors are used in relfecting telescope.
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- Galilean telescope, Keplerian telescope are some of the example of te...
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