In Young's double-slit experiment, the slits are illuminated by monoch – McqOptions

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1.	In Young's double-slit experiment, the slits are illuminated by monochromatic light. The entire set-up is immersed in pure water. Which of the following act cannot restore the original fringe width?
A.	Bringing the slits close together.
B.	Moving the screen away from the slit plane.
C.	Replacing the incident light by that of longer wavelength.
D.	Introducing a thin transparent slab in front of one of the slits.
Answer» E.

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