[Traffic Manager, 2016]

37. The half life of Radium – 226 is 1620 years. You are given a sample of material containing 16 mg of Radium – 226. How long will it take for the sample to contain 1mg of Radium – 226 ?

1. 3240 years

2. 6480 years

3. 1620 years

4. 4860 years

Correct Answer :

6480 years