Important Formulae
- Y = Y1 + Y2 = a1 sin ωt + a2 sin (ωt + ϕ)
- I = R2 = a21 + a22 + 2a1a2 cos ø
- Imax = (a1 + a2)2 = 4a2 if a1 = a2 = a
- Imin = (a1 – a2)2 = 0 if a1 = a2 = a
- xn for nth bright fringe
- xn for nth dark fringe
- Fringe width
- δ = 2μt cosr = nλ for bright interference fringes
- 2μt cos r = nλ for dark interference fringes
- for diameter of ...
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