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1 markPaper 1 · Multiple choiceSpectroscopic Methods of Analysis

CAPE Chemistry Unit 2 · 2017 · Paper 1 · Question Q20

Different regions of the electromagnetic spectrum have different energies. Which of the following equations justifies the criteria for dividing the electromagnetic spectrum into regions according to wavelength? [f – frequency]

  1. (A)c = f\lambda
  2. (B)E = hf
  3. (C)E = mc^2
  4. (D)E = hc/\lambda

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