Question

A single slit diffraction pattern shown above. The light used to make the pattern has a wavelength of 341 nm and the screen i
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Answer #1

n interfreence or diffraction pattern

the needed equation is Y = mλD/d---------------1

and d sin theta = mλ--------------------2

where λ = wavelgnth

m = order = 1,2,3,4, ......... for brigth bands

m = 1.5, 2.5, 3.5, 4.5, ......for dark bands

D is the distance from slit to screen

Y = distance from central spot to nth order fringe or fringe width

so here we apply width 2Y = 2* 1* 341nm * 2/(3mm) =4.547×10^-4 m

==== > 0.04547 answer

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