Through which type of glass will light travel the slowest?

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Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

Through which type of glass will light travel the slowest?

Explanation:
Light slows down in materials with a higher refractive index; the speed in a medium is the vacuum speed divided by the refractive index. Flint glass has the highest refractive index among these options due to its leaded composition, so light travels more slowly through it than through crown glass, soda-lime glass, or borosilicate glass.

Light slows down in materials with a higher refractive index; the speed in a medium is the vacuum speed divided by the refractive index. Flint glass has the highest refractive index among these options due to its leaded composition, so light travels more slowly through it than through crown glass, soda-lime glass, or borosilicate glass.

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