In Two Separate Double Slit Experiments, an Interference Pattern Is $\lambda$

question 27

Multiple Choice

In two separate double slit experiments, an interference pattern is observed on a screen. In the first experiment, violet light ( $\lambda$ = 708 nm) is used and a second-order bright fringe occurs at the same location as a third-order dark fringe in the second experiment. Determine the wavelength of the light used in the second experiment.

• A)1320 nm
• B)862 nm
• C)503 nm
• D)431 nm
• E)495 nm

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