A plate of thickness t madeof a material of refractive index mu is placed in front of one of the slits in a double slit experiment. What should be the manimum thickness t which will make the intensity at the centre of the fringe pattern zero?

A plate of thickness t madeof a material of refractive index mu is pla

1.	A plate of thickness t madeof a material of refractive index mu is placed in front of one of the slits in a double slit experiment. What should be the manimum thickness t which will make the intensity at the centre of the fringe pattern zero?
Answer» Solution :INTENSITY at the centre will be zero if path difference `=(LAMBDA)/(2)" (or) "(mu-1)t= (lambda)/(2)" (or) "t= (lambda)/(2(mu-1))`.

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A plate of thickness t madeof a material of refractive index mu is placed in front of one of the slits in a double slit experiment. What should be the manimum thickness t which will make the intensity at the centre of the fringe pattern zero?

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