A Two-Slit Arrangement with 60 $491.0 \mathrm {~nm}$ Coherent Light

question 109

Multiple Choice

A two-slit arrangement with 60.3 μm separation between the slits is illuminated with $491.0 \mathrm {~nm}$ coherent light. If a viewing screen is located 2.14 m from the slits, find the distance from the first dark fringe on one side of the central maximum to the second dark fringe on the other side.

• A) 52.3 mm
• B) 34.9 mm
• C) 69.7 mm
• D) 24.6 mm

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