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Geometrical optics is valid when the dim...

Geometrical optics is valid when the dimensions of aperture are

A

of the same order as the wavelength of light

B

much smaller than the wavelength of light

C

much larger than the wavelength of light

D

of the order of 1Å

Text Solution

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The correct Answer is:
C
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CHHAYA PUBLICATION-DIFFRACTION AND POLARISATION OF LIGHT-EXERCISE (MULTIPLE CHOICE QUESTIONS)
  1. Geometrical optics is valid when the dimensions of aperture are

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  2. Light appears to propagate in straight lines because

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  3. Which of the following does not support the corpuscular nature of ligh...

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  4. Maximum diffraction takes place in case of

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  5. Among the following conditions which one is an essential condition for...

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  6. In single slit diffraction of light of wavelength lambda, angular widt...

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  7. In the diffraction of light of wavelength lambda at a single slit of w...

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  8. The width of single slit diffraction fringes varies

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  9. If width of the slit is increased, what changes would be there in line...

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  10. In a single slit (width = a) diffraction of light of wavelength lambda...

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  11. In a single slit experiment, angular width of the first minimum obtain...

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  12. A beam of light of wavelength 900 nm from a distant source falls on a ...

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  13. The width of diffraction band is

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  14. In a single slit Fraunhofer diffraction experiment, the wavelength of ...

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  15. In a single slit experiment, a beam of parallel monochromatic light fa...

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  16. In a single slit experiment, the width of the slit is reduced. The lin...

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  17. In a single slit experiment, the width of the slit is reduced to half....

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  18. A narrow slit of 2 mm width is illuminated by a monochromatic light of...

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  19. Resolving power of a microscope is

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  20. For minimum angular distance between two stars, which a telescope can ...

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