CAIE A-Level Physics AS 11.1.7 The Composition Mass and Charge of and Radiations Both Questions

Compare alpha, beta and gamma radiation using composition, charge, mass, penetration, ionising power and responses to electric or magnetic fields.

Exam points

Distinguish alpha, beta and gamma radiation by their composition, charge and mass.
Compare penetration, ionising power and deflection of alpha, beta and gamma radiation.

[Maximum number: 1]

The charge-to-mass ratio r of a particle is given by the equation shown.

r=\frac{\text { charge on particle }}{\text { mass of particle }}

The value of r is determined for an $\alpha$ -particle, a $\beta^{+}$ particle and a proton p .
Which list shows the particles in order of increasing magnitude of r from left to right?

$\alpha \rightarrow \beta^{+} \rightarrow p$

$\alpha \rightarrow p \rightarrow \beta^{+}$

$\mathrm{p} \rightarrow \alpha \rightarrow \beta^{+}$

$p \rightarrow \beta^{+} \rightarrow \alpha$

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CAIE A-Level Physics AS 11.1.7 The Composition Mass and Charge of and Radiations Both Questions question 1