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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 wavelength

B

should be much larger then the wavelength

C

has no relation to wavelength

D

should be exactly `(lambda//2)`

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The correct Answer is:
A
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DC PANDEY-WAVE OPTICS-Check point
  1. In Young's double slit experiment the type of diffractive is

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  2. The bending of light about corners of an obstacle is called

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  3. To observe diffraction, the size of the obstacle

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

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  5. In Fresnel's class of diffraction the

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  6. A slit of width is illuminated by white light. For red light (lambda=6...

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  7. Light of wavelength 6328 Å is incident normally on a slit of width 0.2...

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  8. A diffraction pattern is obtained using a beam of redlight. What happe...

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  9. Direction of the first secondary maximum in the Fraunhofer diffraction...

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  10. A light wave is incident normally over a slit of width 24xx10^-5cm. Th...

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  11. The first diffraction minima due to a single slit diffraction is at th...

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  12. Light of wavelength 6328 Å is incident normally on a slit of width 0.2...

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  13. Write two points of difference between interference and diffraction pa...

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  14. The X-ray cannot be diffracted by means of an ordinary grating due to

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  15. A polariser in used to

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  16. Which of the following cannot be polarised?

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  17. Light waves can be polarised as they are

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  18. The transverse nature of light is shown by

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  19. Through which character we can distinguish the light waves from sound ...

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  20. Which of the following is incorrect?

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