A radio-active element has half-life o: 15 years. What is the fraction that wil decay in 30 years ? (A) 0.85 (B) 0.25 (C) 0.5 (D) 0.75
A radio-active element has half-life o: 15 years. What is the fraction that wil decay in 30 years ? (A) 0.85 (B) 0.25 (C) 0.5 (D) 0.75
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Transcribed Image Text:A radio-active element has half-life of
15 years. What is the fraction that will
decay in 30 years ?
(A) 0.85
(B) 0.25
(C) 0.5
(D) 0.75
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