A Light Source Simultaneously Emits Light of Two Wavelengths,460 Nm

question 62

Multiple Choice

A light source simultaneously emits light of two wavelengths,460 nm and 654 nm,respectively.The source is used in a double-slit interference experiment where the slit spacing is a 0.0431 mm,and the distance between double slits and the screen is 0.90 m.What is the separation between the second-order bright fringes of the two wavelengths as they appear on the screen? (1 nm = 10−⁹ m)

• A)4.1E-3 m
• B)2.1E-3 m
• C)8.1E-3 m
• D)6.9E-3 m
• E)4.7E-2 m

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