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(Solution) - In the double slit experiment of Figure the electric fields

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In the double-slit experiment of Figure the electric fields of the waves arriving at point P are given by


E1 = (2.00?V/m) sin [(l .26 x 1015)t]


E2 = (2.00?V/m) sin [(l .26 x 1015)t + 39.6 rad], where time / is in seconds.


(a) What is the amplitude of the resultant electric field at point P?


(b) What is the ratio of the intensity Ip at point P to the intensity Icen at the center of the interference pattern?


(c) Describe where point P is in the interference pattern by giving the maximum or minimum on which it lies, or the maximum and minimum between which it lies. In a phasor diagram of the electric fields,


(d) At what rate would the phasors rotate around the origin and


(e) What is the angle between the phasors?


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