In a historical experiment to determine Planck's constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for the wavelength (2) of incident light and the corresponding stopping potential (Vo) are given below. 2 (um) V, (Volt) 0.3 2.0 0.4 1.0 0.5 0.4 Given that c = 3 x 10' ms" and e = 1.6 x 10"C, Planck's constant (in units of J s) found from such an experiment is

In a historical experiment to determine Planck's constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for the wavelength (2) of incident light and the corresponding stopping potential (Vo) are given below. 2 (um) V, (Volt) 0.3 2.0 0.4 1.0 0.5 0.4 Given that c = 3 x 10' ms" and e = 1.6 x 10"C, Planck's constant (in units of J s) found from such an experiment is

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 66P: The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as...

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