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    Physics-
    General
    Easy

    Question

    The amplitude of resulting wave dues to superposition of y1 = A sin (omegat - kx) & y2 = A sin (omegat - kx + delta) is

    1. 2A cos delta    
    2. 2A tan (delta/2)    
    3. A cos delta sin delta    
    4. none    

    The correct answer is: none

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