Two Stars Must Be Separated If They're to Be Resolved

question 9

Multiple Choice

Two stars must be separated if they're to be resolved for all wavelengths of visible light.Which principle can be used to determine the minimum angular separation of the two stars in order for them to be resolved?

• A)Huygens' Principle
• B)Fermat's Principle
• C)Snell's Law of Diffraction
• D)None are correct.

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