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posted by  LivedeviL on 6/2/2008 7:30:19 PM  |  status: Closed  

it's about LIGHT! life saver for first help

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Calculus Based Physics N/A N/A N/A
Question Details:
A diffraction grating has a slit separation of 2 10-6 m. Calculate the wavelength of the monochromatic light that will have its second order bright fringe diffracted through an angle of 38.0º.
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posted by John(Cramster SME) on 6/3/2008 1:19:16 AM  |  status: Live
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LivedeviL's comment:
"thanks "
Response Details:
 
   for this we use the equation
   d sinθ = m λ
   (2 x 10-6 m) sin38.0o = (2) (λ)
   solve for λ
    
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posted by brownkid on 6/3/2008 10:55:32 AM  |  status: Live
Asker's Rating: Helpful   
LivedeviL's comment:
"thanks "
Response Details:
yea its dsinθ=mλ
d=2x10-6m θ=38 degrees m=2 m is the order number
(2x10-6m)sin38=2λ
λ=(6.16x10-7m)
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