1.

A monochromatice light beam of wavelength 5896 A^(0) is used in double slit experiment to get interference pattern on a screen 9th bright fringe is seen at a particular position on the screen. At the same point on the screen, if 11th bright fringe is to be seen, teh wavelength of the light that is needed is (nearly)

Answer»

`7014 A^(0)`
`3525 A^(0)`
`6780 A^(0)`
`4824 A^(0)`

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