- #1
alingy1
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A double-slit experiment is set up using a helium-neon laser (l = 633 nm). Then a very thin piece of glass (n = 1.50) is placed over one of the slits. Afterward, the central point on the screen is occupied by what had been the m = 10 dark fringe. How thick is the glass?
I have the solution's attached.
My question is: why does the textbook not use snell's law? Is it making the simplistic argument that light traverses the glass piece perpendicularly? Would the problem be somehow changed otherwise?
I have the solution's attached.
My question is: why does the textbook not use snell's law? Is it making the simplistic argument that light traverses the glass piece perpendicularly? Would the problem be somehow changed otherwise?