Light of a Given Wavelength Is Used to Illuminate the Surface

question 77

Multiple Choice

Light of a given wavelength is used to illuminate the surface of a metal,however,no photoelectrons are emitted.In order to cause electrons to be ejected from the surface of this metal you should

• A)use light of a longer wavelength.
• B)use light of a shorter wavelength.
• C)use light of the same wavelength but increase its intensity.
• D)use light of the same wavelength but decrease its intensity.

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Definitions:

Humus

Organic component of soil formed by the decomposition of leaves and other plant material, rich in nutrients.

Deciduous Forest Soil

The fertile, nutrient-rich soil found in forests that lose their leaves seasonally, characterized by rich organic matter and biodiversity.

Closely Packed Pebbles

Small, smooth stones tightly grouped together, often found in riverbeds, beaches, or as a component of natural or humanmade surfaces.

Humus

The natural portion of earth's crust, created through the breakdown of plant matter and leaves by microorganisms found in the soil.