In double-slit diffraction, what is the path difference for constructive interfe

In double-slit diffraction, what is the path difference for constructive interference at the first order maximum?

In double-slit diffraction, what is the path difference for constructive interference at the first order maximum?

Step 1: Understand that in double-slit diffraction, light waves pass through two slits and create interference patterns.
Step 2: Know that constructive interference occurs when the waves from the two slits meet in phase, meaning they add together to make a brighter light.
Step 3: Realize that for constructive interference, the path difference (the difference in distance traveled by the two waves) must be an integer multiple of the wavelength (λ).
Step 4: Identify that the first order maximum refers to the first bright spot in the interference pattern after the central maximum.
Step 5: For the first order maximum, the path difference is equal to one wavelength (λ).

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