A Beam of Light in Air Is Incident on the Surface

question 17

Multiple Choice

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.64) .If the velocity of the beam before it enters the plastic is 3.00 × 10⁸ m/s,what is its velocity inside the block?

• A) 3.00 × 10⁸ m/s
• B) 1.12 × 10⁸ m/s
• C) 1.83 × 10⁸ m/s
• D) 2.34 × 10⁸ m/s
• E) ​1.08 × 10⁸ m/s

---

Definitions:

Structural Model

An abstract representation showing the relationships between parts of a system, such as variables in a theory or components in a machine.

Negative Symptoms

In the context of psychiatry, symptoms that represent a reduction or loss of functions, such as blunted affect or social withdrawal.

Tardive Dyskinesia

A serious and often irreversible side effect of certain antipsychotic medications, characterized by repetitive, involuntary movements.

Agranulocytosis

A potentially life-threatening condition where the white blood cell count (granulocytes) is extremely low, affecting the body's ability to fight infection.