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The Yellow Line of a Sodium Lamp Is Two Lines λ\lambda

Question 11

Multiple Choice

The yellow line of a Sodium lamp is two lines very close together at λ\lambda 1 = 589.592 nm and λ\lambda 2 = 588.995 nm.A diffraction grating with 10,000 lines/cm is used to resolve the lines.What is the angular separation of the two lines for the first order diffraction?


A) 0.212 ∘\circ
B) 0.0423 ∘\circ
C) 0.0613 ∘\circ
D) 0.0814 ∘\circ
E) There is no angular separation.

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