Upon Being Struck by 240-Nm Photons, a Metal Ejects Electrons

question 32

Multiple Choice

Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of 1.45 eV. What is the work function of this metal? (h = 6.626 × 10^-34 J ∙ s, c = 3.00 × 10⁸ m/s, 1 eV = 1.60 × 10^-19 J)

• A) 3.73 eV
• B) 3.13 eV
• C) 4.33 eV
• D) 4.92 eV

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Definitions:

Discounting

The process of determining the present value of a payment or a stream of payments that will be received in the future.

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Financial investments in assets such as property, industrial equipment, or technology, intended to improve a company's capacity or efficiency over the long term.

Future Value

The value of a current asset or amount of money at a specified date in the future, adjusted for interest or inflation.