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BITSAT 2020 Paper

Section: Physics

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Question : 25

Total: 150

A thin sheet of glass (µ=1.5) of thickness 6 micron introduced in the path of one of the interfering beams in a double slit experiment shifts the central fringe to a position previously occupied by fifth bright fringe. Then the wavelength of light used is

6000Å
3000Å
4500Å
7500Å

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