The Work Function of a Certain Metal Is $1.90 \mathrm { eV }$

question 3

Multiple Choice

The work function of a certain metal is $1.90 \mathrm { eV }$ . What is the longest wavelength of light that can cause photoelectron emission from this metal? $\left( 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J} , c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times \right.$ 10>^-34 J.s)

• A) \(14.0 \mathrm {~nm}\)
• B) \(62.4 \mathrm {~nm}\)
• C) \(654 \mathrm {~nm}\)
• D) \(231 \mathrm {~nm}\)
• E) \(344 \mathrm {~nm}\)

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Definitions:

Shock the Conscience

A legal standard describing actions that are so unjust or brutal that they offend fundamental fairness or moral principles.

Kleinig

Refers to John Kleinig, an ethicist known for his work on policing ethics, moral philosophy, and professional ethics.

Seemliness

The quality of being appropriate, decorous, or in good taste according to societal standards.

Gut Reactions

Immediate emotional responses to situations or information, often without deliberate thought or analysis.