In Young's double-slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes: 1. half 2. four times 3. one-fourth 4. double

 

 Question:  From NCERT  | NEET 2020   || [Difficult level:Easy] Subtopic:Young's double-slit experiment || 

:In Young's double-slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes:

1.  half

2.  four times

3.  one-fourth

4.  double 

Answer: 2.  four times..

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