1.

In Young's experiment distance between two consecutive dark fringes is 2 mm, distance between central maximum and third dark fringe will be ......

Answer»

3 mm
`1.5` mm
`2.5` mm
5 mm

Solution :`x_(n)=(2n-1)(beta)/(2), beta=2m , n=3`
`=(5 beta)/(2)=5XX(2)/(2)=5` mm


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