An Optical Fiber Made of Glass with an Index of Refraction

question 18

Multiple Choice

An optical fiber made of glass with an index of refraction 1.50 that is coated with a material with index of refraction 1.30 has a critical angle of

• A)90°.
• B)41.8°.
• C)60.0°.
• D)50.2°.
• E)This combination will not work.

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Definitions:

Great Lakes

The Great Lakes are a group of five large freshwater lakes located on the border between the United States and Canada, forming the largest group of freshwater lakes in the world by total area.

Mississippi Valley

A large geographical area in the United States drained by the Mississippi River, encompassing various states and characterized by rich soil and diverse ecosystems.

Indian Resistance

Refers to the various acts of opposition and warfare by Native American tribes against European colonization, U.S. expansion, and policies from the 17th to the 19th centuries.

Pueblo Revolt

A 1680 uprising of Indigenous Pueblo people against Spanish colonial rule in present-day New Mexico, leading to temporary restoration of their autonomy.