Asked in Premeth 2025 — Biomolecules, Nuclear Physics, Alternating Current, Comprehension 2025Moderate

The ionization power of _ ray is highest.

Correct answer: D. None of these

  • A. Beta
  • B. Gamma
  • C. He-Ne laser
  • D. None of these

Explanation

Among the three types of common radiation, alpha particles have the highest ionization power.Alpha particles are composed of two protons and two neutrons, and they have a positive charge. When they pass through matter, they interact strongly with the electrons and atoms of the material, causing a large number of ionizations. This means that they can knock off electrons from atoms, creating positively charged ions and free electrons, which can go on to create further ionizations.In comparison, beta and gamma radiation have lower ionization power.

Last updated

About Radioactive Decay

Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.

Practise Nuclear Physics

1,254 free Nuclear Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Physics questions like this

Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions