A radioactive element never decays completely, but after about 10 half-lives, the remaining fraction becomes negligible (less than 0.1% of the original amount).
Related Questions:
- What fraction of a radioactive element will be left after 4 half-lives have elapsed?
- What is common in isotopes of an element and what is different in them?
- It happens that a nuclear radiation emits from an atom of an element, and it moves one step ahead in the periodic table. Explain.
- Why do nuclei of atoms with atomic numbers greater than 82 emit radiation?
- β-particle is emitted from the neutron of the nucleus. Write the nuclear equation for this reaction.
- Why is the range of β-particles greater than α-particles in air with the same energy?
- Why is the ionization power of α-particles greater than β-particles in solids with the same energy?
- When a uranium nucleus absorbs a slow neutron, it subsequently emits two α-particles. What is the resulting element?
- Numerical Problems of Chapter 18: Radioactivity
- Why is energy released when lighter nuclei fuse with heavier nuclei?
- Physics 10 MCQ
- Simple harmonic motion and waves
- Simple harmonic motion and waves-NFE
- Give an example of vibratory motion which is not simple harmonic motion. Give a reason for your selection.
- At the extreme position, velocity is zero but acceleration is maximum in simple harmonic motion. How can you theoretically explain it?
- What will happen to the acceleration of a mass-spring system if its mass is doubled?
- A simple pendulum has a time period “T”. What will happen to its time period if its thread length is shortened to half?
- A simple pendulum has a time period of 4 seconds. Will its time period remain the same or change if its steel bob is replaced by a wooden bob of the same size?
- Same masses are attached to different springs, one is vibrating faster. Why?
- A simple pendulum has a time period “T” in Murree. In Karachi, it has a different time period. What would you do to make its time period the same as it was in Murree?