Suppose we consider a large number of continers each containing initially `10000` atoms of a radioactive material with a half life of `1` year. After `1` year.

Options

A. all the containers will have 5000 atoms of the material.
B. all the containers will contain the same nuber of atoms of the material but that nuber will only be approximately 5000.
C. the containers will in general have different number of the atoms of the material but their average will be close to 5000.
D. none of containers can have more than 5000 atoms.

Answer

C

Explanation

Since half life of the material is 1 year, therefore, after 1 year, half the number of atoms will decay on an average. The containers will in general have different numbers of the atoms of the material but their average will be close to 5000.