Ten grams of ^57 Co kept in an open cont...

Ten grams of `^57 Co` 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

10 g

5 g

2.5 g

1.25 g

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HC VERMA ENGLISH-THE NUCLEOUS-Objective 1

The mass of a neutral carbon atom in ground state is
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The mass number of a nucleus is equal to
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As compared to ^12C atom, ^14C atoms has
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The mass number of a nucleus is equal to
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The graph of 1n (R/R0) versus 1n A (R = radius of a nucleus and A = it...
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Let Fpp, Fpn and Fnn denote the magnitudes of the nuclear force by a p...
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Let Fpp, Fpn and Fnn denote the magnitudes of the nuclear force by a p...
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Two protons are kept at a separation of 10 nm. Let Fn and Fe be the nu...
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As the mass number A increases, the binding energy per nucleon in a nu...
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Which of the following is a wrong description of binding energy of a n...
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In one average-life,
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In a radioactive decay, neither the atomic number nor the mass number ...
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During a negative beta decay,
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A freshly prepared radioactive source of half-life 2 h emits radiation...
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The decay constant of a radioactive sample is lambda. The half-life an...
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An alpha particle is bombarded on ^14N. As a result, a ^17O nucleus is...
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Ten grams of ^57 Co kept in an open container beta-decays with a half-...
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Free ^238 U nuclei kept in a train emit alpha particles. When the trai...
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During a nuclear fission reaction,
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