alleryStart learning →Determining the index of refraction requires knowing the speed of light in the:
AThe eye alone
BThe filament
CThat medium
DA vacuum only
Answer & Solution
Correct answer: C. That medium
1. The index of refraction is computed from a speed.
2. Light travels at different speeds in different materials.
3. The index of refraction is determined given the speed of light in a medium.
4. A slower medium has a higher index.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 25 'Geometric Optics', sections 25.1-25.7_
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