If half life of radium is $77$ days. Its decay constant in day will be
If half life of radium is $77$ days. Its decay constant in day will be
- A
$3 \times {10^{ - 13}}\, /day$
- B
$9 \times {10^{ - 3}}\, /day$
- C
$1 \times {10^{ - 3}}\, /day$
- D
$6 \times {10^{ - 3}}\, /day$
Similar Questions
Write the definition of half life of radioactive substance and obtain its relation to decay constant.
Write the definition of half life of radioactive substance and obtain its relation to decay constant.
A radioactive material decays by simultaneous emission of two particles with respective half lives $1620$ and $810$ years. The time (in years) after which one- fourth of the material remains is
A radioactive material decays by simultaneous emission of two particles with respective half lives $1620$ and $810$ years. The time (in years) after which one- fourth of the material remains is
- [AIIMS 2008]
Three fourth of the active decays in a radioactive sample in $3/4\, sec$. The half life of the sample is
Three fourth of the active decays in a radioactive sample in $3/4\, sec$. The half life of the sample is
Activity of a radioactive substance can be represented by various unit. Select correct option
Activity of a radioactive substance can be represented by various unit. Select correct option
A radioactive reaction is $_{92}{U^{238}}{ \to _{82}}P{b^{206}}$. How many $\alpha $ and $\beta $ particles are emitted
A radioactive reaction is $_{92}{U^{238}}{ \to _{82}}P{b^{206}}$. How many $\alpha $ and $\beta $ particles are emitted