Q72.If N0 is the original mass of the substance of half- life period t1/2 = 5 years, then the amount of substance left after 15 years is (1) N0/8 (2) N0/16 (3) N0/2 (4) N0/4
What This Question Tests
Tests the direct application of the half-life concept to calculate the amount of a radioactive substance remaining after a certain period.
Concepts Tested
Formulas Used
N = N₀ (1/2)^(t/T)
📚 NCERT Sections This Tests
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11.3 The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
📋 Question Details
- Chapter
- Nuclei
- Topic
- Half-life
- Year
- 2002
- Shift
- Unknown
- Q Number
- Q72
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 13: Nuclei
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