Photoelectric EffectHard
Question
10 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 -
Options
A.10 g
B.7.5 g
C.5 g
D.2.5 g
Solution
The weight will not change appreciably as the process is β - decay.
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