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Two slits spaced 0.0720 mm apart are 0.800 m from a screen. Coherent light of wavelength...

Two slits spaced 0.0720 mm apart are 0.800 m from a screen. Coherent light of wavelength ?lambda passes through the two slits. In their interference pattern on the screen, the distance from the center of the central maximum to the first maximum is 6.00 mm. If the intensity at the peak of the central maximum is 0.0600 W/m2, what is the intensity at points on the screen when the phase difference, ?pi is (a) 120

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