Exam 26: The Refraction of Light: Lenses and Optical Instruments

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Blue light with a wavelength of 425 nm passes from a vacuum into a glass lens;and the index of refraction is found to be 1.65.The glass lens is replaced with a plastic lens.The index of refraction for the plastic lens is 1.54.In which one of the two lenses does the light have the greatest speed and what is that speed?

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Which one of the following statements best explains why chromatic aberration occurs in lenses,but not in mirrors?

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