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In Young's experiment distance between t...

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

A

3 mm

B

`1.5` mm

C

`2.5` mm

D

5 mm

Text Solution

Verified by Experts

The correct Answer is:
D
`x_(n)=(2n-1)(beta)/(2), beta=2m , n=3`
`=(5 beta)/(2)=5xx(2)/(2)=5` mm
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