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  3. at a given instant say t 0 two radioactive substan

At a given instant say t 0 two radioactive substance A B have equal activities...

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At a given instant say t 0 two radioactive substance A B have equal activities The ratio RB RA of their activities after time t is e 3t If half life of A is ln 2 then half life of B is Question Type Single Correct Type 1 en 2 2 2 2ln 2 3 en 2 4

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