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In Young's experiment for lambda= 4000 Å...

In Young's experiment for `lambda`= 4000 Å fringes observed have width B. The light illuminating the set up now has `lambda` = 6000 Å and the separation between the interfering sources is halved. What is the ratio of distance between the screen and the interfering sources before and now if the fringe width remains unaltered?

A

`1:3`

B

`3:1`

C

`3:4`

D

`2:3`

Text Solution

Verified by Experts

The correct Answer is:
B
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