The spectrum of sodium has two closely spaced lines, known as the sodium doublet, with wavelengths 589.0 nm and 589.6 nm

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The Spectrum Of Sodium Has Two Closely Spaced Lines Known As The Sodium Doublet With Wavelengths 589 0 Nm And 589 6 Nm 1 (62.48 KiB) Viewed 372 times

The spectrum of sodium has two closely spaced lines, known as the sodium doublet, with wavelengths 589.0 nm and 589.6 nm. When sodium light is incident on a diffraction grating with 3,100 rulings/cm, the maxima corresponding to this doublet are separated by Ay = 1.24 mm when the screen is L = 1.30 m from the grating. What is the value of m in this situation? m = 5.12 First, find d by using the given grating density, then apply the condition for intensity maxima for a diffraction grating interference pattern to find an expression for 0. You should find a relationship among y, L, and 0. Use this relationship to find Ay for different values of m. Be sure to convert units as needed. Need Help? Read It