In a Laboratory Experiment, a Rectangular Tank Made of a Transparent

question 45

Multiple Choice

In a laboratory experiment, a rectangular tank made of a transparent solid is filled with an unknown liquid. A submersible laser is placed in the tank, with the beam directed toward the liquid-solid interface at the bottom. By adjusting the aim of the laser, you find that the reflected ray is fully polarized when the angle of incidence is 54°. What is the angle of refraction of the ray transmitted into the solid tank bottom in this case?

• A) 39°
• B) 47°
• C) can't answer this without knowing the indices of refraction.
• D) 36°

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Definitions:

Independent Variable

A variable that is manipulated or changed in an experiment to test its effects on the dependent variable.

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations of the independent variable.

SPSS

A comprehensive system for analyzing data, which stands for Statistical Package for the Social Sciences.

Factorial ANOVA

A statistical analysis method used to examine the effects of two or more categorical independent variables on a continuous dependent variable and their interactions.