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

Question:

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 me = 9.11 × 10−31 kg
Elementary charge e = 1.60 × 10−19 C

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

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

Question Posted: