1. A general condition that two waves undergo constructiveinterference is that:

Question

1. A general condition that two waves undergo constructiveinterference is that:

a. their phase difference iszero.
b. their phase differenceis /2 rad.
c. theirphase difference is ±/2 rad.
d. their phase difference is an even integralmultiple of rad.
e. their phase difference is an odd integral multiple of rad.

2. Two coherent waves reach the same point in phase. One wave hasamplitude 8 units and the other has amplitude 6 units. Theamplitude of the superposed wave is ______ units.

a. 6
b. 8
c.10
d.14
e. 2

Explanation / Answer

1. A general condition that two waves undergo constructiveinterference is that:

    (a)Their phase difference is zero.   Because the waves are in phase . 2 . Two coherent waves reach the same point in phase.One wave has amplitude 8 units and the other has amplitude 6 units.The amplitude of the superposed wave is :           A = A1 + A2                = 8 + 6 = 14 units. Hope this helps u!                = 8 + 6 = 14 units. Hope this helps u!

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