MDCAT Physics MCQ #2561

The activity of a radioactive sample is 1000 Bq. If its half-life is 5 hours, what will be its activity after 10 hours?

MDCAT Physics MCQ #2561

  1. Question 1

    Q1. The activity of a radioactive sample is 1000 Bq. If its half-life is 5 hours, what will be its activity after 10 hours?

    • A) 500 Bq
    • B) 250 Bq
    • C) 1000 Bq
    • D) 750 Bq

    Answer: 250 Bq

    Explanation: After 10 hours (2 half-lives), activity decreases from 1000 Bq to 500 Bq to 250 Bq. Other options are incorrect.