Solve
Study
Textbooks
Guides
Use app
Login
>>
Class 12
>>
Physics
>>
Nuclei
>>
First Order Radioactive Decay
>>
Given a radioactive sample having half -
Question
Given a radioactive sample having half - life of 4 days. Find the probability, a nucleus disintegrates after 2 half lives.
A
$43 $
B
$3231 $
C
$321 $
D
$54 $
Medium
Open in App
Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is A)
Was this answer helpful?
0
0
Similar questions
Half life of a certain radioactive element is 3.465 days. Find its disintegration constant.
Medium
View solution
>
Radioactive nuclei P and Q disintegrate into R with half lives 1 month and 2 months respectively . At time t= 0 , number of nuclei of each P and Q is x. time at which rate of disintegration of P and Q are equal, number of nuclei of R is.
Easy
View solution
>
10% of a radioactive sample has decayed 2 days, decayed percentage be:
Medium
View solution
>
If radium has half-life of
$5$
years. Thus for a nucleus in a sample of radium, the probability of decay in ten years is:
Medium
View solution
>
Assertion
If the half life of a radioactive substance is
$40days$
then
$25$
% substance decay in
$20days$
.
Reason
$N=N_{0}(21 )_{n}$
where,
$n=half life periodtime elapsed $
Medium
View solution
>
More From Chapter
Nuclei
View chapter
>
Revise with Concepts
Law of Radioactive Decay
Example
Definitions
Formulaes
>
Plot Number of Neutrons vs Protons for Radioactive Decay
Example
Definitions
Formulaes
>
Half Life
Example
Definitions
Formulaes
>
Learn with Videos
Law of radioactive decay
8 mins
Radioactive Decay using Differential Equations
9 mins
Half life and mean life of radioactive substances
9 mins
Problems based on radioactive decay
18 mins
Alpha, Beta, and Gamma Decay
14 mins
Practice more questions
NEET Questions
1 Qs
>
Easy Questions
112 Qs
>
Medium Questions
623 Qs
>
Hard Questions
264 Qs
>