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To observe diffraction, the size of the ...

To observe diffraction, the size of the obstacle

A

should be of the same order as the wavelength

B

should be much larger than the wavelength

C

has no relation to wavelength

D

should be exactly half the wavelength

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The correct Answer is:
A
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CP SINGH-WAVE NATURE OF LIGHT-EXERCISES
  1. A parallel monochromatic beam of light is incident normally on a narro...

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  2. Diffraction pattern of a single slit consists of a central bright band...

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  3. To observe diffraction, the size of the obstacle

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  4. A diffraction is obtained by using a beam of red light. What will hap...

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  5. Yellow light is used in a single slit diffraction experiment with slit...

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  6. A slit of width a illuminated by red light of wavelength 6500 Å. The f...

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  7. A single slit of width 0.20 mm is illuminated with light of wavelength...

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  8. Light of wavelength 6328 Å is incident normally on a slit having a wid...

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  9. A beam of light of wavelength 600 nm from a distant source falls on...

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  10. The amplitude modulated (AM) radio wave bends apreciably round the co...

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  11. The fringe pattern observed on Young's double-slit experiment is

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  12. Which of the following properties show that light is a transverse wave...

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  13. Longitudinal waves do not exhibit

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  14. Through which character we can distiguish the light waves from sound w...

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  15. Which of the following cannot be polarised?

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  16. In the propagation of electromagnetic waves the angle between the dire...

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  17. In case of linearly polarised light, the magnitude of the electric fie...

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  18. When a beam of light is used to determine the position of an object, t...

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  19. Which of the following diagrams represent the veriation of electric fi...

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  20. A ray of light is incident on the surface of a glass plate at an angle...

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