JEE PHYSICS MCQ: NUCLEI

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A moderator is used in nuclear reactors in order to

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Correct option: A

Slow down the speed of the neutrons

The correct answer is A (Slow down the speed of the neutrons) because moderators are used to reduce the kinetic energy of neutrons to increase the probability of nuclear fission.

More Questions from NUCLEI

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The radius of a nucleus with atomic mass number

\mathrm{7}

\mathrm{2}\,\,\mathrm{fermi}

. Find the radius of nucleus with atomic number

\mathrm{189}

. Which one is correct about fission?

N{e^{22}}

nucleus, after absorbing energy, decays into two

\alpha -

particles and an unknown nucleus. The unknown nucleus is Nuclear forces are For uranium nucleus how does its mass vary with volume? The half-life of a radioactive isotope ‘x’ is 60 years. It decays to another element ‘y’ which is stable. Two elements x and y were found to be in the ratio of 1 : 15 in a sample of a given rock. The age of the rock was estimated to be