Q. 95.0( 3 Votes )

After 24 hrs, onl

Answer :


Initial Mass of Radioactive Material, No = 1g

Mass of the material after decay, N = 0.125g

Time, t = 24 hours

To find: Half Life Period:

λ = 0.0866 hour-1

t1/2 = 0.693 / λ

= 0.693 / 0.0866

= 8 hours

Therefore the half-life period of the radioactive material is 8 hours.

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