The Rectangular Metal Tank Shown Is Filled with an Unknown

question 26

Multiple Choice

The rectangular metal tank shown is filled with an unknown liquid. The observer, whose eye is level with the top of the tank, can just see corner E. The index of refraction of this liquid is:

• A) 1.75
• B) 1.67
• C) 1.50
• D) 1.33
• E) 1.25

---

Definitions:

Equilibrium Wage

The wage rate at which the quantity of labor supplied equals the quantity of labor demanded in the market, resulting in no unemployment.

Opportunity Cost

The cost of forgoing the next best alternative when making a decision or choice.

Employment Opportunities

Available job positions or career prospects within the job market.

Opportunity Cost

The value of the next best alternative foregone as a result of making a decision; the cost of missing out on the second best choice while selecting among several options.