What is the refractive index of Flint glass as given?

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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

What is the refractive index of Flint glass as given?

Explanation:
Refractive index tells us how much light slows and bends as it enters a material—the higher the index, the more bending. Flint glass is a high-index optical glass, so its n is above 1.6. In standard reference data for practice questions, Flint glass is given as about 1.65, which sits above crown glass (around 1.50) and reflects its higher dispersion compared with common glasses. The other numbers correspond to materials with lower indices or aren’t the typical Flint value used in these materials, so 1.65 is the correct given value.

Refractive index tells us how much light slows and bends as it enters a material—the higher the index, the more bending. Flint glass is a high-index optical glass, so its n is above 1.6. In standard reference data for practice questions, Flint glass is given as about 1.65, which sits above crown glass (around 1.50) and reflects its higher dispersion compared with common glasses. The other numbers correspond to materials with lower indices or aren’t the typical Flint value used in these materials, so 1.65 is the correct given value.

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