Interference and Diffraction
December 8, 2016
Categorised in: 12th Physics
(1) Constructive interference:
Phase difference: 2nπ
Path difference (∆): nλ
(2) Destructive interference:
Phase difference: (2m – 1)π
Path difference (∆): (2m – 1)λ/2
(3) $X = {λD}/{d}$ X -> fringe width
(4) $X_{bright} = {nλD}/{d}$
$X_{dark} = {(2m – 1)λD}/{2d}$
(5) Phase difference: ${2πx}/{λ}$
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