A Young's Double-Slit Apparatus Is Set Up

question 32

Multiple Choice

A Young's double-slit apparatus is set up.The source wavelength is 430 nm,and the double-slit spacing is 0.040 mm.At what distance from the double slits should the screen be placed if the spacing between alternating bright fringes is to be 2.6 cm? (1 nm = 10−⁹ m)

• A) 2.9 m
• B) 2.4 m
• C) 2.2 m
• D) 1.6 m

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