Two wave pulses, one with a positive amplitude and the other one with an equal negative amplitude, travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?
*
2 points
Captionless Image
It is constructive interference with twice the amplitude.
It is destructive interference with zero amplitude.
It is constructive interference with slightly greater amplitude.
It is destructive interference with slightly less amplitude