The decay constant of a radioactive element is $0.01 \ s^{-1}$. Its half-life period is ....... $s$.
- A$693$
- B$6.93$
- C$0.693$
- D$69.3$
Explore More
Similar Questions
The half-life period of a radioactive element $x$ is the same as the mean life time of another radioactive element $y$. Initially,they have the same number of atoms. Then:
DifficultJEE MAIN 2021
View SolutionDefine the disintegration rate or radioactivity of a sample and obtain the relation $R = \lambda N$ and define its different units.
Medium
View SolutionThe half-life of a radioactive substance is $20 \ min$. The time taken for the decay to increase from $20\%$ to $80\%$ is ........ $min$.
Difficult
View SolutionThe half-life of a radioactive nuclide is $100 \, hours$. The fraction of original activity that will remain after $150 \, hours$ would be:
MediumNEET 2021
View SolutionThe half-life of radium is about $1600$ years. Of $100 \, g$ of radium existing now, $25 \, g$ will remain unchanged after .......... $years$.
MediumAIPMT 2004
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo