Physics · Radioactivity
What is the half-life of a radioactive substance?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1The time during which the mass number of the substance becomes half
- 2The time required for a radioactive substance to lose all of its radioactivity
- 3Half of the total lifespan of the radioactive substance
- 4The time required for half of the radioactive nuclei in a sample to decay✓
Correct answer
The time required for half of the radioactive nuclei in a sample to decay
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Physics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Radioactivity MCQs →Want more practice questions on Radioactivity?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Physics · Radioactivity