A Light Source Simultaneously Emits Light of Two Wavelengths,581 Nm

question 77

Multiple Choice

A light source simultaneously emits light of two wavelengths,581 nm and 545 nm,respectively.The source is used in a double-slit interference experiment where the slit spacing is a 0.0441 mm,and the distance between double slits and the screen is 1.70 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) 0.14 cm
• B) 0.07 cm
• C) 0.28 cm
• D) 0.73 cm
• E) ​8.68 cm

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