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Problem 12 Easy Difficulty

Lithium, beryllium, and mercury have work functions of 2.30 eV, $3.90 \mathrm{eV},$ and 4.50 $\mathrm{eV}$ , respectively. Light with a wavelength of $4.00 \times 10^{2} \mathrm{nm}$ is incident on each of these metals. (a) Which of these metals emit photoelectrons in response to the light? Why? (b) Find the maximum kinetic energy for the photoelectrons in each case.

Answer

a. \text { lithium }
b. 0.81 \mathrm{eV}

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Top Physics 103 Educators
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Cornell University

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University of Washington
Top Physics 103 Educators
Elyse G.

Cornell University

Marshall S.

University of Washington

Farnaz M.

Other Schools

Meghan M.

McMaster University