Photons of energies 1.0 eV, 2.0 eV and 3.0 eV strike a metal surface whose work function

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Photons of energies 1.0 eV, 2.0 eV and 3.0 eV strike a metal surface whose work function is 1.8 eV.

a. State which of these photons could cause the release of an electron from the metal.

b. Calculate the maximum kinetic energies of the electrons released in each case. Give your answers in eV and in J.

You will need these values to answer questions:
Speed of light in a vacuum c = 3.00 × 108 m s⁻¹
Planck constant h = 6.63 × 10⁻³⁴ J s
Mass of electron m_e = 9.11 × 10⁻³¹ kg
Elementary charge e = 1.60 × 10⁻¹⁹ C

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Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside

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Question Posted: Oct 01, 2021 03:43 AM

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Photons of energies 1.0 eV, 2.0 eV and 3.0 eV strike a metal surface whose work function

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Ans Given data Energies of Photons are 10 eV 20 eV and 30 eV Work f...View the full answer

Cambridge International AS And A Level Physics Coursebook

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