What Is the Angular Separation of Two Spectral Lines of Wavelengths

question 107

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 diffracting 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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