Question

A radioactive sample has a half-life period 1500 years. A sealed tube containing 1 g of the sample will contain _________ after 3000 year.

• A. 1 g of the sample
• B. 0.5 g of the sample
• C. 0.25 g of the sample
• D. 0.025g of the sample

Answer 1

Answer: (C)

0.25 g of the sample

C. 0.25 g of sample.
Half life 1500 years of 1g sample. After 1500 years it becomes 0.5g, after 3000years it becomes 0.25gm.