COMEDK2017PhysicsNuclear Physics
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. ihe other was created in a nuclear reactor 5 ~min ago. The probability of decay during the next time is
Options
- Adifferent for each nuclei
- Bnuclei created in explosion decays first
- Cnuclei created in the reactor decays first
- Dindependent of the time of creation
Correct answer
D. independent of the time of creation
Step-by-step solution
The decay's constant ( ) and half-life period of radioactive nuclei remains constant and independent of time of creation of radioactive nuclei. Hence, the probability of decay during the next time : independent of the time of creation.