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State two differences between diffraction and interference.

Asked by sunil2791 21st February 2018, 6:11 PM
Answered by Expert
Answer:
Differences between interference and diffraction of light:

Interference of light

Diffraction of light

  • Interference is due to the interaction of light coming from two different wavefronts originating from the same source.
  • Diffraction is due to the interaction of light coming from different parts of the same wavefront.
  • Interference fringes are of the same width.
  • Diffraction fringes are not of the same width.
  • All bright fringes are of the same intensity.
  • All bright fringes are not of the same intensity.
  • All points of minimum intensity are perfectly dark.
  • All points of minimum intensity are not perfectly dark.
  • The spacing between the fringes is uniform.
  • The spacing between the fringes is not uniform.
  • Interference phenomenon does not require an obstacle.
  • Diffraction phenomenon requires an obstacle.
  • Path of the wave stays intact after interference.
  • Diffraction changes the path of the incident wave
Answered by Expert 21st February 2018, 6:31 PM
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