MCQ
For constructive interference to take place between two monochromatic light waves of wavelength $\lambda$, the path difference should be
- A$(2 n-1) \frac{\lambda}{4}$
- B$(2 n-1) \frac{\lambda}{2}$
- ✓$n \lambda$
- D$(2 n+1) \frac{\lambda}{2}$
✓
Answer
Correct option: C.
$n \lambda$
For constructive interference path difference is even multiple of$\frac{\lambda}{2} \text {. }$
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