A) \[{{\sin }^{-1}}\left( \frac{n\lambda }{d} \right)\]
B) \[{{\sin }^{-1}}\left( \frac{n+\frac{1}{2}\lambda }{d} \right)\]
C) \[{{\sin }^{-1}}\left( \frac{n\lambda }{L} \right)\]
D) \[{{\sin }^{-1}}\left( \frac{\left( n+\frac{1}{2} \right)\lambda }{L} \right)\]
Correct Answer: A
Solution :
For constructive interference Path difference, A x= d sin \[\Delta \,x=d\,\sin \,\theta =n\lambda \] \[\Rightarrow \,\,\theta ={{\sin }^{-1}}\,\left( \frac{n\lambda }{d} \right)\]You need to login to perform this action.
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