A Thin Layer of Oil (N = 1

question 42

Multiple Choice

A thin layer of oil (n = 1.25) is on top of a puddle of water (n = 1.33) . If normally incident 500 nm light is strongly reflected, what is the minimum thickness of the oil layer?

• A)200 nm
• B)250 nm
• C)100 nm
• D)400 nm
• E)150 nm

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Definitions:

Stomatal Closure

Refers to the process in which the stomata, tiny openings on the surfaces of leaves and stems, close to reduce water loss in plants.

Abscisic Acid

A plant hormone that regulates various aspects of plant growth and development, including stress responses and seed dormancy.

Auxin

A class of plant hormones responsible for cell elongation, root initiation, and other developmental processes.

Coleoptile

A protective sheath covering the emerging shoot in monocotyledons like grasses and grains.