At a given instant, say t=0, two radioactive substances A and B have equal activities. The ratio RBRA of their activities after time t itself decays with time t as e−3t. If the half-life of A is ln2, the half-life of B is:

At a given instant, say t=0, two radioactive substances A and B have e

1.	At a given instant, say t=0, two radioactive substances A and B have equal activities. The ratio RBRA of their activities after time t itself decays with time t as e−3t. If the half-life of A is ln2, the half-life of B is:
Answer» At a given instant, say $t = 0$ , two radioactive substances $A$ and $B$ have equal activities. The ratio $\frac{R_{B}}{R_{A}}$ of their activities after time $t$ itself decays with time $t$ as $e^{- 3 t}$ . If the half-life of $A$ is $ln 2$ , the half-life of $B$ is:

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At a given instant, say t=0, two radioactive substances A and B have equal activities. The ratio RBRA of their activities after time t itself decays with time t as e−3t. If the half-life of A is ln2, the half-life of B is:

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