If the half life of a radioactive sample is $10\, hours$, its mean life is ..........$hours$
If the half life of a radioactive sample is $10\, hours$, its mean life is ..........$hours$
- A
$14.4$
- B
$7.2$
- C
$20$
- D
$6.93$
Similar Questions
Write a formula showing the relation between half life and average life of a radioactive substance.
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Two radioactive materials $A$ and $B$ have decay constant $5\lambda$ and $\lambda$ respectively.At $t=0$ they have the same number of nuclei, then the ratio of the number of nuclei of $A$ to that $B$ will be $(1/e)^2$ after a time interval
Two radioactive materials $A$ and $B$ have decay constant $5\lambda$ and $\lambda$ respectively.At $t=0$ they have the same number of nuclei, then the ratio of the number of nuclei of $A$ to that $B$ will be $(1/e)^2$ after a time interval
- [AIPMT 2007]
If a radioactive material remains $25 \%$ after $16$ days, then its half life will be ......... days
If a radioactive material remains $25 \%$ after $16$ days, then its half life will be ......... days
In a radioactive substance at $t = 0$, the number of atoms is $8 \times {10^4}$. Its half life period is $3$ years. The number of atoms $1 \times {10^4}$ will remain after interval ...........$years$
In a radioactive substance at $t = 0$, the number of atoms is $8 \times {10^4}$. Its half life period is $3$ years. The number of atoms $1 \times {10^4}$ will remain after interval ...........$years$