Two Thin Layers of Material with Different Indices of Refraction

question 31

Multiple Choice

Two thin layers of material with different indices of refraction are coated on a glass plate.The outer first material has n₁ = 1.404,the inner second material has n₂ = 1.176,and the glass has n_glass = 1.62.If light is incident from air on the first layer,what is the phase change relative to that of the first layer reflection for light that reflects from the glass?

• A) 180°
• B) 540°
• C) 360°
• D) 0°

---

Definitions:

Russia

A country in Eastern Europe and Northern Asia, known for its rich history, cultural heritage, and significant influence in world affairs.

Byzantine Artworks

Refers to art produced in the Byzantine Empire from the 4th century to the Fall of Constantinople in 1453, characterized by its religious icons, mosaics, and rich use of gold and symbolism.

Ivory

A hard, white material from the tusks (mainly elephants) and teeth of animals, used historically for art, decor, and utilitarian items because of its fine texture and workability.

Harbaville Triptych

A Byzantine ivory triptych of the 10th century, known for its detailed carvings and religious iconography.