A Puddle of Water Has a Thin Film of Gasoline

question 9

Multiple Choice

A puddle of water has a thin film of gasoline floating on it.A beam of light is shining perpendicular on the film.If the wavelength of light incident on the film is 560 nm and the indices of refraction of gasoline and water are 1.40 and 1.33,respectively,what must be the minimum thickness of the film to see a bright reflection?

• A)100 nm
• B)200 nm
• C)300 nm
• D)400 nm
• E)500 nm

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Definitions:

Two-Income Parents

Households in which both parents are employed and contribute to the family's income, often for financial stability or to achieve a higher standard of living.

Parenting Duties

Responsibilities and tasks involved in raising children, including providing for their physical, emotional, and educational needs.

Work Hours

The specific times or period during which an individual is expected to perform job-related tasks.

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A mother who chooses to not work outside the home to devote time to domestic responsibilities and child-rearing.