A radioactive sample has half life of 1500 years. A sealed tube containing 1 g of sample will be containing …… of the sample after 3000 years. The missing figure is

Options

A. 1 g
B. 0.5 g
C. 0.25 g
D. 0 g

Answer

C

Explanation

`t=3000` years ,` t_(1//2)=1500` years
`therefore n=(t)/(t_(1//2)=(3000)/(1500)=2`
`N=(N_(0))/(2^(n))=(1g)/(2^(2))=(1)/(4)g =0.25 g`