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Two coherent light waves each with intensity 20 W/m2 combine with a resulting intensity of 70...

Two coherent light waves each with intensity 20 W/m2 combine with a resulting intensity of 70 W/m2. What is the phase difference of the two waves?

A 41°
B 76°
C100°
D140°
0 0
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Co s 8 55-23

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