Q19.The half-life of a radioactive nucleus is 5 years. The fraction of the original sample that would decay in 15 years is : (1) 1 (2) 1 8 4 (3) 7 (4) 3 8 4
What This Question Tests
This question involves calculating the number of half-lives that have passed and then determining the fraction of the original sample that has decayed.
Concepts Tested
Formulas Used
N = N₀(1/2)ⁿ
n = t/T½
Fraction decayed = (N₀ - N)/N₀
📚 NCERT Sections This Tests
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📋 Question Details
- Chapter
- Nuclei
- Topic
- Radioactivity and Half-life
- Year
- 2023
- Shift
- 15 Apr Shift 1
- Q Number
- Q19
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 13: Nuclei
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