A Metallic Surface Is Illuminated with Light of Wavelength 400

question 55

Short Answer

A metallic surface is illuminated with light of wavelength 400 nm. If the work function for this metal is 2.40 eV, what is the maximum kinetic energy of the ejected electrons, in electron-volts? (1 eV = 1.60 × 10^-19 J, c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

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Definitions:

MALT

Mucosa-associated lymphoid tissue, a component of the immune system that works to protect the mucous membranes lining the digestive, respiratory, and urogenital tracts.

Lymphatic Tissue

Lymphatic tissue is part of the immune system, comprised of a network of lymphoid organs, nodes, and ducts that produce and transport lymph from tissues to the bloodstream.

Peyer Patches

Aggregations of lymphoid tissue found in the small intestine, which play a role in the immune response to ingested pathogens.

Lymphatic Nodules

Small, localized clusters of dense tissue within the lymphatic system that are important for immune responses.