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A microwave source emits monochromatic plane waves at a double slit. The slits are separated by 0.25 m, and a screen, 1.0 m away from the slits measures the resulting diffraction pattern. Figure 3 is a depiction of the geometry. From this diffraction pattern, the fringe width (distance from one maximum to another) is 0.3 m. The speed of microwaves in air is 3.0×108 ms−1.

A microwave source emits monochromatic plane waves at a double slit. The slits are separated by 0.25 m, and a screen, 1.0 m away from the slits measures the resulting diffraction pattern. Figure 3 is a depiction of the geometry. From this diffraction pattern, the fringe width (distance from one maximum to another) is 0.3 m. The speed of microwaves in air is 3.0×108 ms−1.

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Grade:12

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