In order to see diffraction the thickness of the film is [J&K CEE 2001 – McqOptions

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1.	In order to see diffraction the thickness of the film is [J&K CEE 2001]
A.	\[100\,\,{AA}\]
B.	\[10,000\,\,{AA}\]
C.	1 mm
D.	1 cm
Answer» C. 1 mm

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