Parallel wave fronts are incident on an opening in a barrier. Which diagram shows the configuration of wave fronts and barrier o
pening that will result in the greatest diffraction of the waves passing through the opening? [Assume all diagrams are drawn to the same scale.]
2 answers:
Explanation :
It is given that, parallel wave fronts are incident on an opening in a barrier. Diffraction of the waves depends on the size of opening and the wavelength of light used as per the following relation :
where,
is the wavelength of light
and a is the opening size (from fig)
So, it is clear that diffraction of waves depends directly on the wavelength of light and inversely on the size of opening.
Hence, the correct option is (2).
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