Red Light Is Viewed Through a Thin Vertical Soap Film $\lambda$

question 29

Multiple Choice

Red light is viewed through a thin vertical soap film. At the third dark area shown, the thickness of the film, in terms of the wavelength within the film, is:

• A) \(\lambda\)
• B) 3\(\lambda\)/4
• C) \(\lambda\)/2
• D) \(\lambda\)/4
• E) 5\(\lambda\)/4

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Definitions:

Free Association

A method in psychoanalysis where the patient speaks freely to reveal unconscious thoughts and feelings.

Resistance

The refusal to accept or comply with something; the attempt to prevent something by action or argument.

Reactance

A motivational reaction to offers, persons, rules, or regulations that threaten or eliminate specific behavioral freedoms, often resulting in a desire to regain the restricted freedom.

Psychotherapy

A therapeutic treatment involving psychological techniques, aimed at overcoming mental health problems or emotional issues.