Q28.The nuclear activity of a radioactive element becomes ( 81 ) th radioactive element is ________ years.
What This Question Tests
This question tests the application of the radioactive decay law to find the half-life of a radioactive element given the reduction in its activity over a specific time period.
Concepts Tested
Formulas Used
N = N₀ (1/2)^(t/T)
A = A₀ (1/2)^(t/T)
📚 NCERT Sections This Tests
3.17 — During Nuclear Explosion, One Of The Products Is 90Sr With Half-Life Of
Chemistry Class 11 · Chapter 3
3.17 During nuclear explosion, one of the products is 90Sr with half-life of 28.1 years. If 1mg of 90Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.
13.2 — Obtain The Binding Energy Of The Nuclei 5626Fe And 20983 Bi In Units Of
Physics Class 12 · Chapter 13
13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u
13.4 — Obtain Approximately The Ratio Of The Nuclear Radii Of The Gold Isotope
Physics Class 12 · Chapter 13
13.4 Obtain approximately the ratio of the nuclear radii of the gold isotope 197 79 Au and the silver isotope 10747 Ag .
📋 Question Details
- Chapter
- Nuclei
- Topic
- Radioactivity, Half-life
- Year
- 2021
- Shift
- 25 Jul Shift 2
- Q Number
- Q28
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 13: Nuclei
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