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Question
What is the diffraction of light?
Answer in Brief
Long Answer
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Solution
The principle of rectilinear propagation of light from geometrical optics predicts a sharp shadow when light passes by the edge of an obstacle or through a small opening or a narrow slit and falls on a screen. However, it is discovered that some of the light deviates from its rectilinear path and enters the geometrical shadow region. This is a common feature of wave phenomena that occurs when a portion of the wavefront is obstructed in some way. This bending of light waves at an edge into the region of the geometrical shadow is called the diffraction of light.
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