Question

The half life of a radioactive substance is 20 days. If its temperature was raised to 1000 K, then what will be half life time ?​

Answer 1

Given:

Half-life of a radioactive substance is 20 days

Final temperature = 1000 K

To Find:

Final half time of radioactive substance =?

Solution:

Half-life of a radioactive substance is independent of temperature, which means if we increase the temperature, the half-life will remain the same because for a fission reaction to take place, internuclear collisions is a pre-requisite, and by increasing temperature, we do not increase the rate of internuclear-collisions.

Thus, the final half time of radioactive substance = 20 days.