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Hi,
I'm doing a very simple problem, but I don't understand the diagram provided (see image below).
What is m here?
I know that m is the order with respect to the central bright fringe, but there isn't a central bright fringe (assuming those circles are the bright fringes)?
Suppose the interference pattern shown in the figure is produced by monochromatic light passing through two slits, with a separation of 161 μm, and onto a screen 1.32 m away. What is the wavelength of light?
dsinθ = mλ (m = 0,1,2,3...) for constructive interference
dsinθ = (m + ½)λ (m = 0,1,2,3...) for destructive interference
tanθ = y/L
tanθ = (23mm)/(1.32m)
θ = 0.998°
λ = (dsinθ)/m = [(161μm)(sin(0.998))]/m
Thanks!
I'm doing a very simple problem, but I don't understand the diagram provided (see image below).
What is m here?
I know that m is the order with respect to the central bright fringe, but there isn't a central bright fringe (assuming those circles are the bright fringes)?
Homework Statement
Suppose the interference pattern shown in the figure is produced by monochromatic light passing through two slits, with a separation of 161 μm, and onto a screen 1.32 m away. What is the wavelength of light?
Homework Equations
dsinθ = mλ (m = 0,1,2,3...) for constructive interference
dsinθ = (m + ½)λ (m = 0,1,2,3...) for destructive interference
tanθ = y/L
The Attempt at a Solution
tanθ = (23mm)/(1.32m)
θ = 0.998°
λ = (dsinθ)/m = [(161μm)(sin(0.998))]/m
Thanks!
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