- #1
bmb2009
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Homework Statement
Plane light waves are incident on a single slit of width 2.45 cm. The second dark fringe is observed at 44.3° from the central axis. What is the wavelength of the light?
Homework Equations
θ=pλ/a... where theta is in radians, p =2 (second light minimum), and a = slit width
this seems like it should be a simple problem but I can't get the answer..any Help?
The Attempt at a Solution
I tried
44.3°=.7732 rad so .7732=(2)(λ)/.0245 and solved for λ. Also, does come out in nano meters or meters?
Thanks for your help!