For the Fraunhofer diffraction to occur, the wave front incident on the aperture must be? 1) spherical 2) plane 3) cylindrical 4) elliptical
1 Answer
May 3, 2018
Please see the explanation below
Explanation:
Fraunhofer diffraction is :
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Light forms plane waves when reaching the screen
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long distance from source
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by converging lens
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A bright fringe is seen along the axis
#(theta=0)# with alternating bright and dark fringes on each side -
the wavefronts are planar at the aperture
The answer is