Ten grams of 57Co kept in an open container beta decays with a half-life of 270 days.
Ten grams of 57Co kept in an open container beta decays with a half-life of 270 days. The weight of the material inside the container after 540 days will be very nearly
(a) 10g
(b) 5g
(c) 2.5g
(d) 1.25g.
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(a) The weight of the material inside the container after 540 days will be very nearly 10g.
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