What Is the Angular Separation of the Two Second-Order Spectral

question 8

Multiple Choice

What is the angular separation of the two second-order spectral lines having wavelengths 417 nm and 388 nm using a diffraction grating having 456 lines/mm?

• A) 1.63°
• B) 1.52°
• C) 0.815°
• D) 3.26°

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