Which of the following should be equal to the path difference as the condition for constructive interference?

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Odd integral multiple of wavelength

Integral multiple of wavelength

Odd integral multiple of half wavelength

Integral multiple of half wavelength

answer is B.

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Detailed Solution

Concept- Here, we'll move on to define the word "wave." Next, we'll talk about the positive and negative effects of interference between two waves. We will also discuss the prerequisites for intervention to be either beneficial or harmful.
If the path difference between the waves at that point is equal to an integral multiple of the wavelength of the waves, then there is constructive interference at that point.
So, path difference

where n must be an integer.
Hence, the correct answer is option 2,

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