Two coherent waves have intensities I1=25.0 mW/m^2 and I2= 15.0mW/m^2 at a certain location in space. a) Calculate the intensity of the superposition of the waves when they interfere constructively. B) Calculate the intensity of the waves when they interfere destructively. c) If the waves were incoherent, what would be the intensity of the superposition of the two waves? Justify your answer

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.