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# Nuclear Physics-Multiple choice questions

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1. A hospital patient receives an x-ray dose of 0.5 m rad. What is the dose equivalent in sieverts?

a. 0.5 m Sv
b. .005 m Sv
c. .05 m Sv
d. 5 m Sv

2. Determine the identity of the nucleus X in the reaction 13C6 + n -----> X + gamma

a. 13C6
b. 14C6
c. 14N7
d. 14N6

3. Identify the particle Y in the reaction 2H1 + Y ------> 4He2 + n

a. 1H1
b. 2H1
c. 3H1
d. 4H1

4. What is the kinetic energy in MeV of a room-temperature thermal neutron? By "thermal neutron" we mean one with kinetic energy kT. take room temperature to be 300 K.

a. 2.59 x 10^(-8) MeV
b. 2.59 x 10^(-6) MeV
c. 2.59 x 10^(-5) MeV
d. 2.59 x 10^(-3) MeV

5. How much mass is lost in the fission of the nuclear fuel in a 1000 MW power plant in one year? (assume that the power plant is 33% efficient)

a. 2.10 kg
b. 3.15 kg
c. .35 kg
d. 1.05 kg

6. Calculate the energy released in the reaction 3He2 + 3He2 ----> 4He2 + 1H1 + 1H1

a. 12.86 MeV
b. 6.42 MeV
c. 3.12 MeV
d. 18.51 MeV

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Answers to Multiple choice questions on Nuclear Physics.

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1. A hospital patient receives an x-ray dose of 0.5 m rad. What is the dose equivalent in sieverts?

a. 0.5 m Sv
b. .005 m Sv
c. .05 m Sv
d. 5 m Sv

X rays and gamma rays have a Q about 1
Therefore 1 rem = 1 rad as Q=1
100 rem = 1 Sv
Therefore 0.5m rad= 0.5 m rem = 0.5 m /100 Sv= .005 m Sv

2. Determine the identity of the nucleus X in the reaction 13C6 + n -----> X + gamma

a. 13C6
b. 14C6
c. 14N7
d. 14N6

n has a charge 0 and mass 1
gamma rays are radiation: no charge and mass
Therefore
X will have a charge = ...

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