If two coherent waves,one with intensity 8.0 units and the other with intensity 4.0 units,undergo destructive interference,what is the resulting intensity?
A) 4.0 units
B) 6.0 units
C) -4.0 units
D) 1.9 units
E) 0.7 units

Question

Quizplus · Accepted Answer

Destructive interference occurs when two waves are out of phase, reducing the overall intensity. The resulting intensity is calculated using the formula: I = (sqrt(I1) - sqrt(I2))^2, where I1 and I2 are the intensities of the two waves. Here, I = (sqrt(8) - sqrt(4))^2 = (2.83 - 2)^2 = 0.7 units.

If Two Coherent Waves,one with Intensity 8