When the Surface of a Metal Is Exposed to Blue

question 59

Multiple Choice

When the surface of a metal is exposed to blue light,electrons are emitted.If the intensity of the blue light is increased,which of the following things will also increase?

• A)the number of electrons ejected per second
• B)the maximum kinetic energy of the ejected electrons
• C)the time lag between the onset of the absorption of light and the ejection of electrons
• D)the work function of the metal
• E)all of the above

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Definitions:

Phenotype Frequencies

The proportion of various phenotypes in a given population, often impacted by genetic and environmental factors.

MN Blood Types

A blood group system based on the presence or absence of the M and N antigens on the surface of red blood cells.

Hardy Weinberg Principle

A principle that describes how allele and genotype frequencies in a population remain constant from generation to generation in the absence of evolutionary influences.

Antigens

Substances that are recognized by the immune system and can provoke an immune response, typically proteins or polysaccharides found on pathogens.