NEET Physics Nuclei Questions Solved


Mean life of a radioactive sample is 100 seconds. Then its half life (in minutes) is
(a) 0.693                (b) 1
(c) 10-4                 (d) 1.155

(d) Mean life (T) = 1/λ = 100 second
Half-life = 0.693λ=0.693×10060=1.155 min 

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