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aChordate
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Homework Statement
You shine a green laser pointer (l = 535 nm) on a diffraction grating that contains 1.0
x 104 lines/cm. When projected onto a screen that is 5.0 m away from the grating, how far
apart will the zeroth-order and first-order bright spots be?
Homework Equations
sinθ = m λ/d
The Attempt at a Solution
sinθ = 0 * 535nm/0.009615cm
θ =0
sinθ = 1 * 535nm/0.009615cm
θ = 0.3188
tanθ=y/L
y = Ltanθ=5mtan0.3188 = 0.0278 m