NEET Class neet Answered
please answer this
Asked by Prashant DIGHE | 11 Jan, 2020, 09:46: PM
Expert Answer
Fraction f of undecayed mass of radioactive element after time t is given by
f = e-λt .....................(1)
where λ is decay constant
if we need to get the fraction of undecayed mass after 2 mean-life, then time t = 2/λ
Hence eqn.(1) becomes, f = e-2 ≈ 0.135
Hence mass of undecayed element = (10×0.135) g = 1.35 g
Answered by Thiyagarajan K | 11 Jan, 2020, 10:58: PM
Application Videos
-
Growth of Current in L-R Circuit
In this video, the growth of current in RL circuit is explained. It include...
NEET neet - Physics
Asked by kanika4070 | 13 May, 2024, 11:54: PM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by vk3460092 | 11 May, 2024, 05:31: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by tejaskadiyan148 | 05 May, 2024, 11:52: AM
ANSWERED BY EXPERTNEET neet - Physics
Asked by hardikmittal25 | 03 May, 2024, 02:57: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by sa1033278 | 02 May, 2024, 07:37: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by bidyutpravarout79 | 26 Apr, 2024, 09:40: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by ramanjaneyuluoguru | 25 Apr, 2024, 04:18: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by shatakshibhatt9 | 20 Apr, 2024, 07:52: PM
ANSWERED BY EXPERT
