A Young's Interference Experiment Is Conducted with Violet Argon Laser

question 47

Multiple Choice

A Young's interference experiment is conducted with violet argon laser light (λ = 409 nm) .The separation between the slits is 0.66 mm,and the interference pattern appears on a screen 3.8 m away.What is the spacing between the bright fringes? (1 nm = 10−⁹ m)

• A)1.5E-3 m
• B)2.4E-3 m
• C)1.5E+4 m
• D)4.7E-3 m
• E)1.6E-3 m

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