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In YDSE, both slits produce equal intens...

In YDSE, both slits produce equal intensities on the screen. A 100% transparent thin film is placed in front of one of the slits. Now, the intensity on the centre becomes 75% of the previous intensity. The wavelength of light is 6000Å and refractive index of glass is 1.5. Thus, minimum thickness of the glass slab is

A

`0.2 mu m`

B

`1.0 mu m`

C

`1.4 mu m`

D

`1.6 mu m`

Text Solution

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The correct Answer is:
D
N//a
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