CAIE IGCSE Physics Alpha Beta Gamma Properties

Practise identifying alpha, beta and gamma from particle nature, absorber results, range and relative ionising or penetrating ability in detector contexts.

Exam points

identify alpha as a helium nucleus, beta as a fast electron and gamma as electromagnetic radiation
use paper stopping alpha, aluminium reducing beta and thick lead reducing gamma in absorber tests
rank ionisation alpha > beta > gamma and penetration gamma > beta > alpha for applications

[Maximum number: 2]

State the nature of $\gamma$ -rays.

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5.2.2.2—Alpha (α), beta (β) and gamma (γ) question 1