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Questions  

If two waves represented by y1=4sinωt and y2=3sin(ωt+π3) interfere at a point, the amplitude of the resulting wave will be about              

a
7
b
6
c
5
d
3.5

detailed solution

Correct option is B

φ=π/3, a1=4, a2=3  Resultant Amplitude=A=a12+a22+2a1.a2cosφ ⇒A≈6

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