In an interference pattern the (n+4)th blue bright fringe and nth red – InterviewSolution

1.	In an interference pattern the (n+4)th blue bright fringe and nth red bright fringe are formed at the same spot. If red and blue light have the wavelength of 7800 ˚A and 5200 ˚A then value of n should be:
Answer» In an interference pattern the $(n + 4)^{t h}$ blue bright fringe and $n^{t h}$ red bright fringe are formed at the same spot. If red and blue light have the wavelength of $7800 ˚ A$ and $5200 ˚ A$ then value of $n$ should be:

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