PhysicsMedium183×since 2002Q6088At some instant, a radioactive sample S₁ having an activity 5 μ\muμCi has twice the number of nuclei as another sample S₂ which has an activity of 10 μ\muμCi. The half lives of S₁ and S₂ are :A20 years and 5 years, respectivelyB20 years and 10years, respectivelyC5 years and 20 years, respectivelyD10 years and 20 years, respectivelyCheck answerSkip