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In Young ’ s double slit experiment, distance between two sources is 0.1 mm . The distance of screen from the sources is 20 cm . Wavelength of light used is 5460 Å. Then angular position of the first dark fringe is

1. 0.08°
2. 0.16°
3. 0.20°
4. 0.313°

Correct answer: 0.313°

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