Question

which of the following is essential for observing diffraction​

Answer 1

Answer:

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Answer 2

Explanation:

A shadow of a solid object, using light from a compact source, shows small fringes near its edges. The speckle pattern which is observed when laser light falls on an optically rough surface is also a diffraction phenomenon. When deli meat appears to be iridescent, that is diffraction off the meat fibers.