Path difference:

$\overline{){\mathbf{\u2206}}{\mathbf{x}}{\mathbf{=}}{\mathbf{m}}{\mathbf{\lambda}}}$

Where m is the order and λ is the wavelength.

Figure Q17.7 shows the viewing screen in a double-slit experiment with monochromatic light.

Fringe C is the central maximum.

Suppose the wavelength of the light is 500 nm. How much farther is it from the dot on the screen in the center fringe E to the left slit than it is from the dot to the right slit?

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