What Is the Longest Wavelength of Electromagnetic Radiation That Will $2.28 \mathrm { eV }$

question 120

Multiple Choice

What is the longest wavelength of electromagnetic radiation that will eject photoelectrons from sodium metal for which the work function is $2.28 \mathrm { eV }$ ? $\left( c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \right.$ $\mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

• A) \(499 \mathrm {~nm}\)
• B) \(580 \mathrm {~nm}\)
• C) \(545 \mathrm {~nm}\)
• D) \(633 \mathrm {~nm}\)
• E) \(668 \mathrm {~nm}\)

---

Definitions:

Satisfying

Providing fulfillment or pleasure; meeting the needs or expectations of someone or something.

Sisters And Brothers

Siblings; individuals who share one or both parents in common.

Late Adulthood

The final stage of the human life span, characterized by retirement, increasing health issues, and reflection on life accomplishments.

Nurturing

The act of supporting and encouraging the growth or development of someone, often through caring and providing emotional support.