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Jugal Kishor
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Asked: 2025-01-14T04:45:35+00:00 In:

Two metals A and B have work functions 2eV and 5eV, respectively. Which metal has a lower threshold wavelength?

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Metal B having higher work function of 5 eV will have a lower threshold wavelength.
Class 12 Physics
Chapter 11 Dual Nature of Radiation and Matter Session 2024-2025.

class 12 physicsmetal has a lower threshold wavelengthshort answer questions
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    1. Metal B has a lower threshold wavelength because threshold wavelength (λ th ) is inversely proportional to the work function (W) as λ th = hc/W . A higher work function results in a shorter threshold wavelength.

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