A 300 gram radioactive sample has life of 3 hour's After 18 hour's remaining quantity will be:

A 300 gram radioactive sample has life of 3 hour's. After 18 hours, remaining quantity will be:

A radioactive substance has an average life of 5 hours. In a time of 5 hours

A radioactive substance has an average life of 5 hours. In a time of 5 hours

A radioactive element has a half life of 2.5 hours. In 10 hours 1 gram of radioactive material is reduced to

A radioactive substance has a half life of 60 minutes. After 3 hours, the fraction of atom that have decayed would be.

A radioactive substance has an averge life of 5 hours. In a time of 5 hours the decay in percentage is

If half-life of a radioactive element is 3 hours. After 9 hours its activity becomes