The Light Reflected from a Soap Bubble (N = 1 $\lambda$

question 57

Multiple Choice

The light reflected from a soap bubble (n = 1.40) appears red ( $\lambda$ = 640 nm) at its center.What is the minimum thickness (in nm) ?

• A)124
• B)104
• C)114
• D)134
• E)234

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Definitions:

Factor Analysis

Factor Analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors.

Single Trait

Refers to focusing on one characteristic feature of an individual or system for study or analysis.

Normal Curve

A symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68 percent fall within one standard deviation of it) and fewer and fewer near the extremes. Also called a normal distribution.

Standardization

Defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group.