Question

What is the formula for constructive interference?

Answer 1

Explanation:

There is constructive interference when d sin θ = mλ (for m = 0, 1, −1, 2, −2, . . . ), where d is the distance between the slits, θ is the angle relative to the incident direction, and m is the order of the interference

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Answer 2

Answer:

d sin θ = mλ

(for m = 0, 1, −1, 2, −2, . . . ),