A Young's Double-Slit Apparatus Is Set Up

question 74

Multiple Choice

A Young's double-slit apparatus is set up.A screen is positioned 1.30 m from the double slits,and the spacing between the two slits is 0.0392 mm.The distance between alternating bright fringes is 1.16 cm.What is the light source wavelength? (1 nm = 10−⁹ m)

• A)312 nm
• B)346 nm
• C)321 nm
• D)350 nm
• E)325 nm

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