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Question

To observed diffraction, The size of the obstacle


  1. should be λ2 , where λ is the wavelength

  2. should be of the order of wavelength.

  3. has no relation to wavelength

  4. Should be much larger than the wavelength


Solution

The correct option is B

should be of the order of wavelength.


For diffraction λ d , so the size of the obstacle should be comparable to the wavelength of light.

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