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Learning objective

Apply the count rate expressed in counts per second or counts per minute.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE PhysicsNuclear physicsCore content

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Quick explanation

Apply the count rate expressed in counts per second or counts per minute

  • This point belongs to Detection of radioactivity, especially Detection of radioactivity outcomes.
  • You need to be able to apply the count rate expressed in counts per second or counts per minute.
  • The key ideas to know are Use and Measure.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

UseMeasure

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This objective helps connect Detection of radioactivity outcomes to exam-style questions, flashcards, and revision notes for Detection of radioactivity.

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Paper 3 structured question: Detection of radioactivity

Paper 3Theory (Core)1 marks

Description

Count Rate Measurement

A Geiger-Muller counter measures the count rate of a radioactive source. The count rate is recorded as 150 counts per minute.

  1. a

    State the unit of count rate.

    Aim for approximately 1 distinct marking point.

    [1]
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