Question 1
When a beam of nuclear radiation of initial intensity I0 passes through a thickness x of material, the intensity of the beam exiting the material is I =
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I0e−μx.
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I0eμx.
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I0(e−μx− 1).
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I0(eμx− 1).
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I0(1 −e−μx).
Question 2
When a fast neutron collides with a hydrogen or deuterium nucleus, the most likely result is that
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the neutron has an appreciable gain in kinetic energy, the gain being greatest for head-on collisions.
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the neutron has an appreciable gain in kinetic energy, the gain being greatest for oblique collisions.
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the neutron has an appreciable loss in kinetic energy, the loss being greatest for head-on collisions.
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the neutron has an appreciable loss in kinetic energy, the loss being greatest for oblique collisions.
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the neutron is absorbed by the hydrogen or deuterium nucleus.