Question

In a double-slit interference pattern, light from the top slit travels a distance of 4.0 m...

In a double-slit interference pattern, light from the top slit travels a distance of 4.0 m between the slit and a point on the screen. How far does light from the bottom slit travel to that point if there is a bright fringe at that point? What about if there is a dark fringe at that point?

Choose from this list:
A. 4.0 m + 2.2λ
B. 4.0 m + 3.5λ
C. 4.0 m + 3.8λ
D. 4.0 m + 4.0λ
E. 4.0 m + 4.3λ
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Answer #1

Use the properties of interference of light for the Young’s double slit experiment to find the required option for the bright fringe and dark fringe as shown below

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