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In Young's double slit experiment, 5th d...

In Young's double slit experiment, `5th` dark fringe is obtained at a point. If a thin transparent film is placed in the path of one of waves, then 7th bright is obtained at the same point. The thickness of the film in terms of wavelength `lambda` and refractive index `mu` will be

A

`(1.5 lamda)/((mu-1))`

B

`1.5(mu-1)lamda`

C

`2.5(mu-1)lamda`

D

`(2.5 lamda)/((mu-1))`

Text Solution

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The correct Answer is:
D
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TARGET PUBLICATION-INTERFERENCE AND DIFFRACTION-CRITICAL THINKING
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