The condition for observing Fraunhofer diffraction from a single slit is that, the wave front incident on the slit should be,
A
Plane
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B
Elliptical
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C
Cylindrical
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D
Spherical
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Solution
The correct option is A Plane In Fraunhofer diffraction, the source is at a far position (infinite distance) from the slit so that the wave front will be plane.