What is the effective distance between the source of light and the scr – McqOptions

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1.	What is the effective distance between the source of light and the screen in Fraunhofer Diffraction?
A.	Focal length of the convex lens
B.	Less than Focal Length of the convex lens
C.	Greater than the focal length of the convex lens and less than infinite
D.	Infinite
Answer» E.

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