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In Young's double slit experiment slits ...

In Young's double slit experiment slits are separated by 2 mm and the screen is placed at a distance of1.2 m from the slits. Light consisting of two wavelengths `6500Å` and `5200Å` are used to obtain interference fringes.
The the separation between the fourth bright fringes the two wavelength is

A

0.312 mm

B

0.123 mm

C

0.213mm

D

0.412 mm

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