What is radioactivity ?
What is radioactivity ?
Similar Questions
In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at an instant of time equal to its mean life is
In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at an instant of time equal to its mean life is
In a $RA$ element the fraction of initiated amount remaining after its mean life time is
In a $RA$ element the fraction of initiated amount remaining after its mean life time is
A solution containing active cobalt ${}_{27}^{60}Co$ having activity of $0.8\,\mu Ci$ and decay constant $\lambda $ is injected in an animal's body. If $1 \,cm^3$ of blood is drawn from the animal's body after $10\, hrs$ of injection, the activity found was $300\, decays$ per minute. What is the volume of blood that is flowing in the body?..........$litres$ ( $ICi = 3.7 \times 10^{10}$ decay per second and at $t = 10\, hrs$ ${e^{ - \lambda t}} = 0.84$ )
A solution containing active cobalt ${}_{27}^{60}Co$ having activity of $0.8\,\mu Ci$ and decay constant $\lambda $ is injected in an animal's body. If $1 \,cm^3$ of blood is drawn from the animal's body after $10\, hrs$ of injection, the activity found was $300\, decays$ per minute. What is the volume of blood that is flowing in the body?..........$litres$ ( $ICi = 3.7 \times 10^{10}$ decay per second and at $t = 10\, hrs$ ${e^{ - \lambda t}} = 0.84$ )
- [JEE MAIN 2018]
Carbon dating is best suited for determining the age of fossils if their age in years is of the order of
Carbon dating is best suited for determining the age of fossils if their age in years is of the order of
- [AIIMS 2004]
The average life $T$ and the decay constant $\lambda $ of a radioactive nucleus are related as
The average life $T$ and the decay constant $\lambda $ of a radioactive nucleus are related as