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2 marksParticulate Nature of Electromagnetic Radiation

CAPE Physics Unit 2 · 2002 · Paper 1 · Question 8(b)(iii)

Figure 10 shows the graph of maximum kinetic energy of emitted electrons against frequency of incident light from a halogen source.

Determine Planck's constant from the graph.

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Other parts of this question

  1. 8(a)(i)State the name given to the effect of using electromagnetic radiation to cause electrons to be emitted from a metal surface.[1 mark]
  2. 8(a)(ii)Explain how the photoelectric effect provided evidence for the particle nature of electromagnetic radiation.[5 marks]
  3. 8(b)(i)Determine the threshold frequency from the graph.[1 mark]
  4. 8(b)(ii)Determine the work function from the graph.[1 mark]

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