Home
Class 12
PHYSICS
If the half-life of a radioactive elemen...

If the half-life of a radioactive element is 10 hr, its average life =

A

1.44

B

6.93

C

14.4

D

0.693

Text Solution

Verified by Experts

The correct Answer is:
C
`lambdat_(1//2)= ln2= 0.693`
`implies t_("avg")= (1)/(lambda)= (t_(1//2))/(ln2)= (10)/(0.693)implies t_("avg")= 14.4`
Promotional Banner

Similar Questions

Explore conceptually related problems

The half life of a radioactive element is 10 days, if the mass of the specimen reduces to 1//10^(th) then the time taken is :-

In a mean life of a radioactive sample

The half - line period a radioactive element X is same as the mean life time of another radioactive element Y . Initially both of them have the same number of atoms. Then:

To determine the half life of a radioactive element , a student plote a graph of in |(dN(t))/(dt)| versus t , Here |(dN(t))/(dt)| is the rate of radioatuion decay at time t , if the number of radoactive nuclei of this element decreases by a factor of p after 4.16 year the value of p is

Half life period of a radio active element is 1500 years. Find the value of disintegration constant interms of second.

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life period. How much time will it take for 90% decay?

The half lives of radioactive elements X and Y are 3 mintue and 27 minute respectively. If the activities of both are same, then calculate the ratio of number of atoms of X and Y.