Skip to content

Course home

Sign up

4.2 Atoms and nuclear radiation

EasyMediumHard
123456789101112131415161718192021222324252627282930
Question 21
H

A detector near a sealed source records 240 counts per second. The activity of the source is much greater than 240 Bq. Why?

[1]
A

The detector records background radiation as well as the source

B

The detector converts counts per second into becquerel incorrectly

C

The detector only receives the radiation emitted towards its window

D

The source emits gamma rays, which the detector cannot respond to

Markscheme

4.2 Atoms and nuclear radiation Questions

  1. GCSE
  2. /Physics
  3. /4.2 Atoms and nuclear radiation

40 exam-style questions on AQA GCSE Physics 4.2 Atoms and nuclear radiation, covering 4.2.1 Radioactive decay and nuclear radiation, 4.2.2 Nuclear equations, 4.2.3 Half-lives and the random nature of radioactive decay, and 4.2.4 Radioactive contamination. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank