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Arrange these colours in an increasing o...

Arrange these colours in an increasing order of wavelength :
red, violet, yellow, green

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violet, green, yellow, red.
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MODERN PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-Revision Exercises (Very Short Answer Questions)
  1. What is yellow spot ?

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  2. Why does diamond sparkle ?

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  3. Arrange these colours in an increasing order of wavelength : red, vi...

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  4. What is the effect of change of medium on the wavelength of light ?

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  5. A person is not able to see vertical wires clearly in a grid of wires....

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  6. What are the possible causes of hypermetropia ?

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  7. What are the possible causes of myopia.

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  8. Which lens is used for the correction of hypermetropia ? And why ?

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  9. Which lens is used for the correction of myopia and why ?

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  10. What are the far point and near point of the human eye with no...

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  11. Which lens is used for the correction of presbyopia ?

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  12. What is the difference between microscope and telescope ?

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  13. What is meant by linear magnification?

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  14. Write the ray diagram for formation of image in the simple microscope.

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  15. The magnifying power of a compound microscope is

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  16. Derive lens maker's formula for a thin convex lens.

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  17. What do you understand by normal adjustment of a telescope ?

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  18. Write the formula for magnifying power and length of tube of an astron...

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  19. Objective of a compound microscope should have small focal length. Why...

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  20. Can a microscope function as a telescope by inverting it. Can a telesc...

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