Half-life 5 days. Fraction remaining after 15 days:

Question

Team JKSSB Mock Tests · Accepted Answer

Number of half-lives n = 15/5 = 3. Fraction = (1/2)³ = 1/8. Exponential decay: N = N₀(1/2)^(t/T). Memory aid: 'After n half-lives: fraction = 1/2ⁿ'. Radioactivity calculation frequently tested in competitive exams with simple half-life arithmetic.

Half-life 5 days. Fraction remaining after 15 days: MCQ with Answer and Explanation

Solution (By JKSSB Mock Tests)

Discuss this Question (0)

Practice More Physics Questions