A) Decrease
B) Remain unaffected
C) Increase
D) First increase and then decrease
Correct Answer: C
Solution :
Fringe width \[(\beta )=\frac{D\lambda }{d}\Rightarrow \beta \propto \lambda \] As \[{{\lambda }_{red}}>{{\lambda }_{yellow}},\]hence fringe width will increase.You need to login to perform this action.
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