◈ Oracle Prep Sign Up Free

O-LevelPhysicsNuclear Physics5054/12 · Oct/Nov 2021 · Q381 Mark

A radioactive sample contains an isotope that emits alpha particles. Which quantity stays constant?

Athe half-life of the isotope

Bthe mass of the sample

Cthe number of neutrons in the sample

Dthe rate of decay of the isotope

✓ Correct answer

A: the half-life of the isotope

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Nuclear Physics and see which topics are most likely to come up next.

Sign up free →

About this question

Topic: Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2021 Paper 1 Variant 2, question 38.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Physics questions

Nuclear PhysicsMay/June 20131m

Energy is released in some power stations and in the Sun by either nuclear fission or nuclear fusion. Which type of n…

Nuclear PhysicsMay/June 20131m

A school keeps radioactive sources for use in radioactivity experiments in a laboratory. The background radiation is …

Nuclear PhysicsMay/June 20131m

Which nuclides have the same number of neutrons in a nucleus?

WavesMay/June 20131m

A guitar string is made to vibrate. What makes the pitch of the note rise?

MagnetismMay/June 20131m

A teacher sticks a magnet to the top surface of a match-box cover. The bottom surface is placed in a small tray of ir…

MagnetismMay/June 20131m

The diagrams show a small compass close to a strong bar magnet. Which diagram shows the correct compass direction?

← Browse all past-paper questions