A Beam of Light Traveling in Air Strikes a Slab

question 14

Multiple Choice

A beam of light traveling in air strikes a slab of transparent material.The incident beam makes an angle of 40° with the normal,and the refracted beam make an angle of 26° with the normal.What is the speed of light in the transparent material? (c = 3.0 × 10⁸ m/s)

• A)1.0 × 10⁸ m/s
• B)2.0 × 10⁸ m/s
• C)2.3 × 10⁸ m/s
• D)3.0 × 10⁸ m/s
• E)0.50 × 10⁸ m/s

---

Definitions:

Reciprocity

A social norm of responding to a positive action with another positive action, fostering positive relations among individuals.

Research Survey

A systematic method of collecting information from individuals, typically by asking them questions through interviews or questionnaires, to gather data for analysis.

Source Credibility

The perceived trustworthiness, expertise, and reliability of the sender of information.

Competent

Having the necessary ability, knowledge, or skill to do something successfully.