A Young's Double-Slit Apparatus Is Set Up

question 1

Multiple Choice

A Young's double-slit apparatus is set up. A screen is positioned 1.16 m from the double slits, and the spacing between the two slits is 0.0500 mm. The distance between alternating bright fringes is 1.42 cm. What is the light source wavelength? (1 nm = 10 ^{- 9} m)

• A) 612 nm
• B) 280 nm
• C) 490 nm
• D) 355 nm

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