When a fast neutron collides with a hydrogen or deuterium nucleus, the most likely result is that
a. the neutron has an appreciable gain in kinetic energy, the gain being greatest for head-on collisions.
b. the neutron has an appreciable gain in kinetic energy, the gain being greatest for oblique collisions.
c. the neutron has an appreciable loss in kinetic energy, the loss being greatest for head-on collisions.
d. the neutron has an appreciable loss in kinetic energy, the loss being greatest for oblique collisions.
e. the neutron is absorbed by the hydrogen or deuterium nucleus.
c
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