Question

Write the relation between path difference and wavelength of light wave used for constructive interference

Answer 1

Answer:

The wave from Source 2 (S2) travels a distance of 7 wavelengths to reach the same point. The difference in distance traveled by the two waves is one full wavelength. That is, the path difference is 1 λ. When the path difference is one full wavelength, a crest meets a crest and constructive interference occurs.

Explanation:

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