A) \[\Delta x=\left( \frac{\lambda }{2\pi } \right)\Delta \phi \]
B) \[\Delta x=\left( \frac{2\pi }{\lambda } \right)\Delta \phi \]
C) \[\Delta \phi =\left( \frac{\pi }{\lambda } \right)\Delta x\]
D) \[\Delta \phi =(2\pi )\,\,\Delta x\]
Correct Answer: A
Solution :
Phase difference and path difference of two interfering waves are related as \[\Delta x=\left( \frac{\lambda }{2\pi } \right)\Delta \phi \]
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