Question

1. Refractive index is a measure of the _____of light when a ray travels from one medium to another.

2. If the angle of incidence is 0°, then the angle of refraction will be_______
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Answer 1

Answer:

1. Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n' in descriptive text and mathematical equations.

2. If the incident ray falls along the normal, the angle of incidence is 0 degrees, NOT 90 degrees. The angle is measured with the normal to the mirror and not with the plane of the mirror. Hence the angle of reflection is equal to 0 degrees.

Answer 2

Answer:

1: ray

2: 0°

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