Physics - Modern Physics Question with Solution | TestHub

A sample of ${}^{210}\mathrm{Po}$ which is $\mathrm{\alpha }$ - emitter with ${\mathrm{T}}_{\frac{1}{2}}=138\mathrm{ }$ days is observed by a student to have $2000$ disintegration ($2000 \mathrm{Bq}$). The activity in $\mathrm{\mu Ci}$ for this source is