the displacement of the interfering light waves are Y1 is equal to 4 Sin Omega T and Y 2 is equal to 3 Sin Omega T + π/2.what is the amplitude of the resultant wave??
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phai = π/2
a1 = 4
a2= 3
resultant amplitude ,
a = √a1^2 + √a2^2
= √4^2+3^2
= √25
= 5
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