Questions
If yellow light in the Young's double slit experiment is replaced by red light, the fringe width will
a
Decrease
b
Remain unaffected
c
Increase
d
First increase and then decrease
detailed solution
Correct option is C
Fringe width (β)=Dλd⇒β∝λAs λred >λyellow , hence fringe width will increase.Talk to our academic expert!
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