alleryCoherent sources give an interference pattern that is:
AFading
BRandom
CStable
DShifting
Answer & Solution
Correct answer: C. Stable
1. A steady phase difference keeps the maxima where they are.
2. The minima likewise stay put.
3. So the interference pattern is stable.
_Source: syllabus Physics Part II, Chapter 10, Wave Optics._
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