Q.

In YDSE, the fringe width is 16mm. If the entire arrangement is placed in water of refractive index 4/3,then the fringe width becomes (in mm)

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answer is 12.

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Detailed Solution

β1=β/μ=164/3=12

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In YDSE, the fringe width is 16mm. If the entire arrangement is placed in water of refractive index 4/3,then the fringe width becomes (in mm)