You Dip a Wire Loop into Soapy Water (N =

question 88

Multiple Choice

You dip a wire loop into soapy water (n = 1.33) and hold it up vertically to look at the soap film in white light.The soap film looks dark at the top because it has sagged,and its thickness there is nearly zero,causing the reflected wavelengths to interfere destructively.Part way down the loop you see the first red band of the reflected white light.What is the thickness of the soap film there? (Take the wavelength of red light to be 680 nm.)

• A)130 nm
• B)170 nm
• C)220 nm
• D)250 nm
• E)340 nm

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Definitions:

Homosexuality

A sexual orientation characterized by a romantic or sexual attraction to individuals of the same sex.

Hypothalamus

A small but crucial part of the brain located below the thalamus, responsible for regulating many bodily functions including hunger, thirst, sleep, body temperature, and hormones.

Sexual Arousal

A physiological and psychological state of heightened excitement and anticipation related to sexual activity or desire.

Sexual Attraction

The feeling of being drawn to or desiring romantic or sexual interaction with individuals based on physical or emotional traits.