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The least count of a travelling microsco...

The least count of a travelling microscope is ________

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The least count of Beckmann.s thermometer is ____________ .

The vernier scale of a travelling microscope has 50 divisions which coincide with 49 main scale divisions. If each main scale division is 0.5 mm. Calculate the minimum inaccuracy in the measurement of distance.

Image formed in simple microscope is __________ .

The modern electron microscope is usually of "_____________" type.

An electron microscope is used for "_______________"

The resolving power of a microscope is

What is the use of simple microscope ?

SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))
  1. Magnification power of microscope has to times more magnification po...

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

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

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  4. The least count of a travelling microscope is

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

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  6. The first telescope was invented by in 1608.

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  7. made a telescope to observe distant stars.

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

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

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

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  11. is know as long sightedness.

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

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  13. mirrors are used in relfecting telescope.

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

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

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  16. The energy of incident and scattered beam of light are not same, that ...

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  17. Mie scattering is caused by , and .

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  18. The scattering of light contains additional frequencies than incident ...

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  19. When light passing through Reflected wave will be parallel in convex ...

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  20. The band of colours is termed as .

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