What Is the Angular Separation of Two Spectral Lines of Wavelengths

question 131

Multiple Choice

What is the angular separation of two spectral lines of wavelengths 497 nm and 251 nm formed in the third order with a grating having 587 lines per millimeter?

• A)34.8°
• B)24.8°
• C)41.3°
• D)29.4°
• E)4.21°

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