A sample of U 235 that is below the critical mass will not sustain a chain react
ID: 1374863 • Letter: A
Question
A sample of U235 that is below the critical mass will not sustain a chain reaction because
too many neutrons escape through the surface of the sample without initiating fission.
the heat produced by the spontaneous fission of some nuclei is insufficient.
the inertia of the sample is too low for efficient fission.
nuclei repel each other due to their positive charges.
a.too many neutrons escape through the surface of the sample without initiating fission.
b.the heat produced by the spontaneous fission of some nuclei is insufficient.
c.the inertia of the sample is too low for efficient fission.
d.nuclei repel each other due to their positive charges.
Explanation / Answer
Here ,
when a lot of protons escape the surface without initiating the fission .
there will be very less protons available and
the chain reaction will not start.
Hence , the correct choice is
a.
too many neutrons escape through the surface of the sample without initiating fission.