A Young's Double-Slit Apparatus Is Set Up

question 2

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 2.4 cm? (1 nm = 10^-9 m)

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

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