Q103. The half-life of a radioactive substance is 10 days. This means that:Physics — NUST Mock By IBAGRADS 3 — Question 103 of 200A. The substance will completely disintegrate in 20 days.B. The substance will completely disintegrate in 40 days.C. 1⁄8 of the substance's mass will be left after 40 days.D. 7⁄8 of the substance's mass will have disintegrated after 30 days.Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →