Question
Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be,
✓
Answer
b
For central maximum, path difference is zero hence phase difference for coherent sources of light will be zero.
For central maximum, path difference is zero hence phase difference for coherent sources of light will be zero.
$\because 0=\frac{2 \pi}{\lambda} \Delta x$
where $\Delta x$ is path difference and $\phi$ is phase difference.
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