At a given instant, say t = 0, two radio active substances A and B have equal activities. The ratio R_B/R_A of their activities after time t itself decays with time t as e^{–3t} . [f the half-life of A is m_2, the half-life of B is : [9 Jan 2019 Shift 2]

JEE Main 9 Jan 2019 Shift 2 Solved Paper

Section: Physics

Question : 3 of 90

Marks: +1, -0

At a given instant, say t = 0, two radio active substances A and B have equal activities. The ratio

of their activities after time t itself decays with time t as e–3t . [f the half-life of A is m2, the half-life of B is :

[9 Jan 2019 Shift 2]

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