Home
Class 12
PHYSICS
The decay constant of a radioactive samp...

The decay constant of a radioactive sample is `lambda`. The half-life and mean life of the sample are respectively given by

A

`1//lambda and (ln 2)//lambda`

B

`(ln2)lambda and 1//lambda`

C

`lambda (ln 2) and 1//lambda`

D

`lambda//(ln 2) and 1//lambda`

Text Solution

Verified by Experts

The correct Answer is:
b
From `R=R_(0)((1)/(2))^(n)`, we have
`1=64((1)/(2))^(n)`
or `n=6` =numbers of half-lives
`t=n xx t_(1//2)=6xx2 =12h`
Promotional Banner

Similar Questions

Explore conceptually related problems

The decay constant of a radioactive sample is 'lambda' . The half-life and mean life of the sample are respectively a) 1/lamda,("in"2)/lamda b) ("in"2)/lamda,1/lamda c) "in"2,1/lamda d) lamda/("in"2),1/lamda

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively

In a mean life of a radioactive sample

Mean life of a radioactive sample is 100s . Then ,its half-life (in min) is

The decay constant of a radioactive substance is 0.693 per minute. What will be the half-life and mean life of it?

If the half-life of a radioactive sample is 10 hours its mean life is

If the half-life of a radioactive sample is 10 hours its mean life is ?

The decay constant of a radioactive substance for a and beta emission are lambda_(a) and lambda_(beta) respectively. It the substance emits a and beta simultaneously, the average half life of the material will be_______

The mean life of a radioactive sample is 100 years. Then after 100 years, about -