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What is the half-life of a radioactive substance if it takes 10 years for half o

Practice Questions

Q1
What is the half-life of a radioactive substance if it takes 10 years for half of the substance to decay?
  1. 5 years
  2. 10 years
  3. 20 years
  4. 30 years

Questions & Step-by-Step Solutions

What is the half-life of a radioactive substance if it takes 10 years for half of the substance to decay?
Correct Answer: 10 years
  • Step 1: Understand what half-life means. It is the time it takes for half of a radioactive substance to decay.
  • Step 2: Read the question carefully. It states that it takes 10 years for half of the substance to decay.
  • Step 3: Since the question gives the time it takes for half of the substance to decay, we can directly identify this time as the half-life.
  • Step 4: Conclude that the half-life of the radioactive substance is 10 years.
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