Which of Two Diffraction Gratings,one with N₁ and the Other

question 80

Multiple Choice

Which of two diffraction gratings,one with N₁ and the other with N₂ slits per centimeter,has the greater resolving power if N₁ is greater than N₂?

• A)the grating with N₁ slits per centimeter
• B)the grating with N₂ slits per centimeter
• C)They both have the same resolving power,but the one with N₁ slits per centimeter has sharper spectral lines.
• D)They both have the same resolving power,but the one with N₂ slits per centimeter has sharper spectral lines.
• E)The width of the individual slits must be known to answer this question.

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