Question

A mixture consists of two radioactive materials A1 and A2 with half lives of 20 s and 10 s respectively.

Answer 1

A mixture consists of two radioactive materials A1 andA2 with half lives of 20 s and 10 s respectively. Initially the mixture has 40 g of A1 and 160 g of A2. The amount of the two in the mixture will become equal after:

Option 1) 
60 s

 

Option 2) 
80 s

Option 3) 
20 s

 

Option 4) 
40 s

 

1

Answers (1)