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Q. No.The binding energy per nucleon in deuterium and helium nuclei are \(1.1\) MeV and \(7.0\) MeV, respectively. When two deuterium nuclei fuse to form a helium nucleus the energy released in the fusion is:
1. \(2.2\) MeV
2. \(28.0\) MeV
3. \(30.2\) MeV
4. \(23.6\) MeV
Subtopic: Nuclear Binding Energy |
84%
Level 1: 80%+
AIPMT - 2010
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In a nuclear reaction, \(2~\text{amu}\) of mass is converted into energy. According to Einstein's mass-energy relationship, the energy released is:
| 1. | \(1863~\text{J}\) | 2. | \(931.5~\text{MeV}\) |
| 3. | \(1863~\text{MeV}\) | 4. | \(931.5~\text{J}\) |
Subtopic: Mass-Energy Equivalent |
83%
Level 1: 80%+
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Which of the following graphs accurately represents the relationship between the internuclear distance and the force between nucleons?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Nuclear Binding Energy |
83%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | In \(\alpha \text-\text{decay}\) atomic number of the daughter nucleus is reduced by \(2\) units from the parent nucleus. |
| Reason (R): | An \(\alpha \text-\text{particle}\) carries four units of mass. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Types of Decay |
80%
Level 1: 80%+
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Fusion processes, like combining two deuterons to form a \({He}\)-nucleus are impossible at ordinary temperatures and pressure. The reasons for this can be traced to the fact:
Choose the correct option:
| (a) | nuclear forces have short-range. |
| (b) | nuclei are positively charged. |
| (c) | the original nuclei must be completely ionized before fusion can take place. |
| (d) | the original nuclei must first break up before combining with each other. |
Choose the correct option:
| 1. | (a) and (c) | 2. | (a) and (d) |
| 3. | (b) and (d) | 4. | (a) and (b) |
Subtopic: Nuclear Energy |
Level 3: 35%-60%
Hints
The mass number of a nucleus is equal to:
| 1. | the number of neutrons in the nucleus. |
| 2. | the number of protons in the nucleus. |
| 3. | the number of nucleons in the nucleus. |
| 4. | none of them. |
Subtopic: Nuclear Energy |
85%
Level 1: 80%+
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Nucleus \(A\) is having mass number \(220\) and its binding energy per nucleon is \(5.6~\text{MeV}.\) It split into two fragments \(B\) and \(C\) of mass numbers \(105\) and \(115.\) The binding energy of nucleons in \(B\) and \(C\) is \(6.4~\text{MeV}\) per nucleon. The energy \(Q\) released per fission will be:
1. \(0.8~\text{MeV}\)
2. \(275~\text{MeV}\)
3. \(220~\text{MeV}\)
4. \(176~\text{MeV}\)
1. \(0.8~\text{MeV}\)
2. \(275~\text{MeV}\)
3. \(220~\text{MeV}\)
4. \(176~\text{MeV}\)
Subtopic: Nuclear Binding Energy |
83%
Level 1: 80%+
JEE
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For the fission reaction
\({ }_0^1 \mathrm{n}+{ }_{92}^{235} \mathrm{U} \rightarrow{ }_{92}^{236} \mathrm{U} \rightarrow{ }_{56}^{144} \mathrm{Ba}+{ }_{36}^{89} \mathrm{Kr}+\mathrm { neutrons }\)
the number of neutrons produced is:
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)
\({ }_0^1 \mathrm{n}+{ }_{92}^{235} \mathrm{U} \rightarrow{ }_{92}^{236} \mathrm{U} \rightarrow{ }_{56}^{144} \mathrm{Ba}+{ }_{36}^{89} \mathrm{Kr}+\mathrm { neutrons }\)
the number of neutrons produced is:
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)
Subtopic: Nuclear Energy |
87%
Level 1: 80%+
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Which of the following need not be necessarily obeyed in a nuclear reaction?
| 1. | The conservation of charge |
| 2. | The conservation of mass |
| 3. | The conservation of mass energy |
| 4. | The conservation of momentum |
Subtopic: Nuclear Energy |
52%
Level 3: 35%-60%
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The nuclear radius of a \({ }_{3}^{8} \mathrm{L i}\) nucleus is \(2.2~\text{fm}\). The nuclear radius of \({ }_{30}^{64} \mathrm{Zn}\) is nearly:
1. \(4.4~\text{fm}\)
2. \(7~\text{fm}\)
3. \(22~\text{fm}\)
4. \(17.6~\text{fm}\)
1. \(4.4~\text{fm}\)
2. \(7~\text{fm}\)
3. \(22~\text{fm}\)
4. \(17.6~\text{fm}\)
Subtopic: Nucleus |
86%
Level 1: 80%+
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