Ask a Question

The half life of a radioactive substance is 20 minutes.

← Prev Question Next Question →
+1 vote
25 views
asked Mar 28, 2018 in Physics by paayal (26,720 points) ● 4 ● 6 ● 11

The half life of a radioactive substance is 20 minutes. The approximate time interval (t2 – t1) between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed is

(a) 7min 

(b) 14min

(c) 20min 

(d) 28min

1 Answer

0 votes
answered Mar 28, 2018 by sanjaydas (61,430 points) ● 5 ● 7 ● 7
selected Mar 28, 2018 by Vikash Kumar
 
Best answer

(c) : Number of undecayed atoms after time t2,

← Prev Question Next Question →

Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon
~~~*****~~~

Related questions

© 2017 Sarthaks eConnect
Managed by Sarthaks Digitizing India
...