Question: 78. ECE Board March 1996 When the two waves of the same frequency speed and amnude traveling in opposite directions are superimposed, A. the

78. ECE Board March 1996 When the two waves of the same

78. ECE Board March 1996 When the two waves of the same frequency speed and amnude traveling in opposite directions are superimposed, A. the phase difference is always zero B. distractive waves are produced C. standing waves are produced D. constructive interference always results

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