A radioactive isotope has a half-life of 28 years

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

A radioactive isotope has a half-life of 28 years. What is its decay constant

\lambda

(in

\text{year}^{-1}

)? (Take

\ln 2 = 0.693

.) (a)

0.0357

(b)

0.0248

(c)

0.0277

(d)

0.0108