Question:
After two hours, one-sixteenth of the starting amount of a certain radioactive isotope is remained undecayed. The half-life of the isotope is
After two hours, one-sixteenth of the starting amount of a certain radioactive isotope is remained undecayed. The half-life of the isotope is
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Fraction remaining:
((1)/(2))ⁿ
where n = number of half-lives.
Updated On: Mar 20, 2026
- 15 minutes
- 30 minutes
- 45 minutes
- 4 hours
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: (1)/(16) = ((1)/(2))⁴
Step 2: Four half-lives occur in 2 hours.
Step 3: T₁/2 = (120)/(4) = 30 minutes
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