LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
25 views
in Physics by (24.3k points)
Two radioactive elements A and B are present in a mixture. Both are beta active. Half lives of A and B are 30 minute and 60 minute respectively. The initial activity of the sample hour only 30 beta particles were detected in an interval of 2 second. Assume that law of radioactivity decay is obeyed.
(a) Find the ratio of number of active of A to that of B in the mixture initially.
(b) The molar mass of both A and B is closed to 200g. The mixture contains other substance (non radioactive) aprt from A and B. what fraction of the entire mixure is radioactive (fraction by weight) if it is given what mass of the mixture is `1mug`.

Please log in or register to answer this question.

1 Answer

0 votes
by (24.2k points)
Correct Answer - (a) `(1)/(2)` (b) `5.2xx10^(-11)`

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.

Categories

...