When a Photoelectric Surface Is Illuminated with Light of Wavelength

question 51

Short Answer

When a photoelectric surface is illuminated with light of wavelength 437 nm, the stopping potential is measured to be 1.67 V. (1 eV = 1.60 × 10^-19 J, e = 1.60 × 10^-19 C, m_electron = 9.11 × 10^-31 kg, h = 6.626 × 10^-34 J ∙ s)
(a) What is the work function of the metal, in eV?
(b) What is the maximum speed of the ejected electrons?

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Definitions:

Stratified Squamous Epithelium

A type of epithelial tissue composed of several layers of flat cells, designed to protect underlying tissues.

Gap Junction

Small channel between cells that allows the passage of ions and small molecules between cells; provides means of intercellular communication.

Hemidesmosomes

Structures that anchor cells to the underlying basement membrane, facilitating cell stability and structural integrity.

Tight Junction

Cell junctions in epithelial or endothelial cellular sheets that prevent the passage of molecules and ions between the cells.