MDCAT Physics MCQ #2580

Carbon-14 has a half-life of 5730 years. What formula calculates age of a sample with 25% remaining?

MDCAT Physics MCQ #2580

  1. Question 1

    Q1. Carbon-14 has a half-life of 5730 years. What formula calculates age of a sample with 25% remaining?

    • A) t = 2 × 5730
    • B) t = 5730 × ln(25)/ln(50)
    • C) t = 5730 × log(25)
    • D) t = 5730 × 4

    Answer: t = 2 × 5730

    Explanation: 25% remains after 2 half-lives. Option B uses incorrect logarithm.