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For a given lens in a telescope, what are the two letters corresponding to the light that gives the worst and best resolutions, respectively? (E.g., if you think that C gives the worst and A the best resolution, answer CA.)

A. Green
B. Red
C. Yellow
D. Violet
E. Blue
F. Orange

  • Physics -

    Well, the highest frequency or shortest wavelength would give the best resolution. The highest frequency is violet.

    At the long wavelength, low frequency end of the visible spectrum you have red.

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