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5.1 The nuclear model of the atom

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Question 155

Inside a vacuum tube, a heated metal filament releases particles through the process of thermionic emission.

What are these emitted particles, and how does increasing the temperature of the filament affect the rate of their emission?

A

Protons, and the rate of emission increases

B

Electrons, and the rate of emission increases

C

Ions, and the rate of emission decreases

D

Electrons, and the rate of emission decreases

Markscheme

5.1 The nuclear model of the atom Questions

  1. IGCSE
  2. /Physics
  3. /5.1 The nuclear model of the atom

284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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