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JEE Main & Advanced Physics Wave Mechanics Question Bank Interference and Superposition of Waves

  • question_answer
    If two waves having amplitudes 2A and A and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be [MP PET 1991; DPMT 1999]

    A)            3A 

    B)            \[\sqrt{5}A\]

    C)            \[\sqrt{2}A\]                        

    D)            A

    Correct Answer: A

    Solution :

               In the same phase f = 0 so resultant amplitude = \[{{a}_{1}}+{{a}_{2}}=2A+A=3A\]


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