A radioactive substance reduces to 25% of its mass in 1000 years Find the half life period of that substance - Physics -

Question

A radioactive substance reduces to 25% of its mass in 1000 years
Find the half life period of that substance

Jyoti Pant · Accepted Answer

Using expression,N=N02t/T25100N0=N02t/Tor 14N0=N02t/Tor 14=12t/Tor tT=2or T=t/2=1000/2=500 years

A radioactive substance reduces to 25% of its mass in 1000 years.Find the half life period of that substance.