A Young's Double-Slit Apparatus Is Set Up Where a Screen

question 14

Multiple Choice

A Young's double-slit apparatus is set up where a screen is positioned 1.2 m from the double slits.If the distance between alternating bright fringes is 0.83 cm,and the light source has a wavelength of 579 nm,what is the separation of the double slits? (1 nm = 10−⁹ m)

• A)1.2E-2 m
• B)8.4E-5 m
• C)7.0E-6 m
• D)9.0E-5 m
• E)4.0E-9 m

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