In a Young's double slit experiment, the fringe width is found to be 0 – McqOptions

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1.	In a Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in water of refractive index 4/3 without disturbing the geometrical arrangement, the new fringe width will be [CBSE PMT 1990]
A.	0.30 mm
B.	0.40 mm
C.	0.53 mm
D.	450 micron
Answer» B. 0.40 mm

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