The half- life of radioactive cobalt- 60 is 5.26 years.  a) Calculate the mean life and the disintegration constant.  b) What is the activity of a 1- gm sample of Co - 60? Express this activity in curies and  in rutherfords.

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Q: (Hand by written ans.)Mantles for gas lanterns contain thorium, because it forms an oxide that can…

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.