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

question 11

Multiple Choice

The yellow line of a Sodium lamp is two lines very close together at $\lambda$ ₁ = 589.592 nm and $\lambda$ 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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