Modern Physics

Practice Questions:

Question 51: moderate

Binding energy per nucleon plot against the mass number for stable nuclei is shown in the figure. Which curve is correct :

1. A

2. B

3. C

4. D

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Question 52: easy

Nuclear forces are :

1. Short ranged attractive and charge independent

2. Short ranged attractive and charge dependent

3. Long ranged repulsive and charge independent

4. Long ranged repulsive and charge dependent

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Question 53: difficult

The binding energy of deuteron \[_{1}^{2}H\] is 1.112 MeV per nucleon and an α-particle

\[_{2}He^{4}\] has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction

\[_{1}^{2}H+_{1}^{2}H\longrightarrow _{2}^{4}He+Q\] , the energy Q released is :

1. 1 MeV

2. 11.9 MeV

3. 23.8 MeV

4. 931 MeV

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