MCQ
In Young's double slit experiment, when two light waves form third minimum, they have
  • A
    Phase difference of $3 \pi$
  • B
    Path difference of $3 \lambda$
  • C
    Phase difference of $\frac{5 \pi}{2}$
  • Path difference of $\frac{5 \lambda}{2}$

Answer

Correct option: D.
Path difference of $\frac{5 \lambda}{2}$
d
(d)

Path difference is given by $\Delta x=(2 n-1) \frac{\lambda}{2}=\frac{5 \lambda}{2}$

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