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YDSE is conducted using light of wavelen...

YDSE is conducted using light of wavelength `6000 Å` to observe an interference pattern. The slits are `2mm` apart. The fringes are observed on a screen `10cm` away from the slits. When a film of some material `0.5mm` thick was placed over one of the slits, the fringe pattern shifted by a `5mm`. What is the refractive index of the material of the film ?

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`mu = 1.2`
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AAKASH SERIES-WAVE OPTICS-PROBLEMS (LEVEL - II)
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