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JEE Main 27 July 2021 Shift 1 Solved Paper

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Question : 14

Total: 90

If ' f denotes the ratio of the number of nuclei decayed (Nd) to the number of nuclei at t=0(N0)then for a collection of radioactive nuclei, the rate of change of f′ with respect to time is given as :
[λ is the radioactive decay constant]

[27 Jul 2021 Shift 1]

−λ(1−e−λt)
λ(1−e−λt)
λe−λt
−λe−λt

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