NEET UG PHYSICS MCQ: NUCLEI

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\lambda

is decay constant and

N

the number of radioactive nuclei of an element , then the decay rate (

R

) of that element is

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Correct option: B

\lambda N

The decay rate is directly proportional to both the decay constant and the number of radioactive nuclei, hence the correct answer is

\lambda N

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\left({ }_{92}^{235} \mathrm{U}\right)

1\,\,a.m.u = 931\,\,MeV