A radioactive substance emits n beat particles in the first 2 s and `0.5` n beta particles in the next 2 s. The mean life of the sample isA. 4 sB. 2 sC. `(2)/((1n 2))`D. 2 (1n 2) s

A radioactive substance emits n beat particles in the first 2 s and `0

1.	A radioactive substance emits n beat particles in the first 2 s and `0.5` n beta particles in the next 2 s. The mean life of the sample isA. 4 sB. 2 sC. `(2)/((1n 2))`D. 2 (1n 2) s
Answer» Correct Answer - C We have, `lamda=(0.693)/(T_(1//2)` Mean life, `tau=(1)/(lamda)=(t_(1//2))/(0.693)=(2)/(2.303log_(2))=(2)/(In2)s`

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A radioactive substance emits n beat particles in the first 2 s and `0.5` n beta particles in the next 2 s. The mean life of the sample isA. 4 sB. 2 sC. `(2)/((1n 2))`D. 2 (1n 2) s

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