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Two Coherent Sources of Monochromatic Light Are Located at S1 λ\lambda

Question 101

Multiple Choice

Two coherent sources of monochromatic light are located at S<sub>1</sub> and S<sub>2</sub> as shown. If the sources are in phase, the intensity at point P is a maximum when A) d = \lambda B) r<sub>2</sub> + r<sub>1</sub> = \lambda C) r<sub>2</sub> - r<sub>1</sub> = \lambda D) r<sub>2</sub> + r<sub>1</sub> = \lambda /2 E) r<sub>2</sub> - r<sub>1</sub> = \lambda /2 Two coherent sources of monochromatic light are located at S1 and S2 as shown. If the sources are in phase, the intensity at point P is a maximum when


A) d = λ\lambda
B) r2 + r1 = λ\lambda
C) r2 - r1 = λ\lambda
D) r2 + r1 = λ\lambda /2
E) r2 - r1 = λ\lambda /2

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