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In Young's double slit experimentt. When...

In Young's double slit experimentt. When a glass plate `(mu = 1.5)` of thickness is introduce path of one of the interfering beams (wavelength `= lambda`) the intensity at the position where centre maxima occurred previous remains unchanged. The minimum thickness

A

`2 lambda`

B

`lambda`

C

`(2)/(3)lambda`

D

`(lambda)/(3)`

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A
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