A Double Slit That Is Illuminated with Coherent Light of Wavelength

question 122

Multiple Choice

A double slit that is illuminated with coherent light of wavelength $644 \mathrm {~nm}$ produces a pattern of bright and dark fringes on a screen $6.00 \mathrm {~cm}$ from the slits. If the slits are $2783 \mathrm {~nm}$ apart, what is the distance on the screen between the $4 ^ { \text {th } }$ and the $2 ^ { \text {nd } }$ bright fringes on one side of the central maximum?

• A) \(3.13 \mathrm {~cm}\)
• B) \(11.5 \mathrm {~cm}\)
• C) \(17.6 \mathrm {~cm}\)
• D) \(14.7 \mathrm {~cm}\)
• E) \(23.0 \mathrm {~cm}\)

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