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A student tries to find out the wavelength of all blue, green and yellow. He
decided to use double slit arrangement to find it. He believes that he can find
the wavelength of the light from the fringe width of interference pattern. He
noted down the fringe width of each coloured light but forget to note down the colour corresponding to the fringe width. Can you help him to sort out his issue in relating the fringe width to its colour. The measurements of fringe width are  0.14mm, 01.8mm,0.15mm. Justify your answer

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