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A double slit interference pattern is created by two narrow slit spaced 0.025 mm apart on...

A double slit interference pattern is created by two narrow slit spaced 0.025 mm apart on a screen 2 m away from the slits.

a. If the seventh bright fringe on the detector is 10 cm away from the central fringe, what is the wavelength of light (in nm) used in this experiment?

b. What is the angle of the diffraction order?

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