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Q.

N₁ atoms of a radioactive element emit N₂ beta particles per second. The decay constant of the element is (in s^–1)

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a

N₁/N₂

b

N₂/N₁

c

N₁(In2)

d

N₂(In2)

answer is B.

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Detailed Solution

$- \frac{{dN}_{1}}{dt} = {λN}_{1}$

$N_{2} = {λN}_{1}$

$λ = \frac{N_{2}}{N_{1}}$

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