Two slits, 4 mm apart, are illuminated by light of wavelength 6000 Å. – McqOptions

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1.	Two slits, 4 mm apart, are illuminated by light of wavelength 6000 Å. What will be the fringe width on a screen placed 2m from the slits [MP PET 2000]
A.	0.12 mm
B.	0.3 mm
C.	3.0 mm
D.	4.0 mm
Answer» C. 3.0 mm

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