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A Young's double slit apparatus has slit...

A Young's double slit apparatus has slits separated by 0.28 mm and a screen 48 cm away from the slits. The whole apparatus is immersed in water and the slits are illuminated by the red light (`lamda=700` nm in vacuum). Find the fringe-width of the pattern formed on the screen.

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The correct Answer is:
`0.90` mm
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SL ARORA-WAVE OPTICS-Based on Young s Double Slit experiment
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