A radioactive material of half-life time of 69.3 days kept in a container. 2/3rd substance remains undecayed after (given, In 3/2=0.4)

KEAM 2013 Physics and Chemistry Paper

Question : 63 of 120

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A radioactive material of half-life time of 69.3 days kept in a container.

rd substance remains undecayed after (given, In

=0.4)

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