Given,
N0=600; N′=450
N=N0−N′
N=150
Number of remaining nuclei,
N0N=(21)t1/2t (Here, when, t=t21⇒N=2N0)
⇒600150=(21)10t
⇒41=(21)10t⇒(21)2=(21)10t
2=10t⇒t=20minutes
For a radioactive material, the half-life is 10minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
Held on 30 Apr 2018 · Verified 9 Jul 2026.
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