Nuclear Physics
UPPCS
A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in
(A) 3 months
(B) 4 months
(C) 8 months
(D) 12 months
Important Facts
- Three-fourths decay means 1/4 remains. With a 4-month half-life, 2 half-lives (8 months) leave 1/4 (0.25) remaining.
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