Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

(a(i))[3]

A domestic smoke alarm.

(a(ii))[3]

Measuring the thickness of aluminium strips made in a factory.

(b)[2]

Explain the reason why lead-214 ($^{214}_{82}\text{Pb}$) is radioactive.

(c)[2]

State two separate sources of background radiation.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “an alpha particle” …