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Q. No.How does the binding energy per nucleon vary with the increase in the number of nucleons?
1.
decrease continuously with mass number.
2.
first decreases and then increases with an increase in mass number.
3.
first increases and then decreases with an increase in mass number.
4.
increases continuously with mass number.
Subtopic: Nuclear Binding Energy |
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Level 1: 80%+
NEET - 2013
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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 |
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Level 1: 80%+
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\(^{238}_{92}\mathrm{U}\) converts into \(^{206}_{82}\mathrm{Pb}\) by radio active decay process. How many \(\alpha\)-particles and \(\beta\)-particles may be emitted in the process?
| 1. | \(8\alpha~\text{and}~8\beta\) | 2. | \(5\alpha~\text{and}~12\beta\) |
| 3. | \(8\alpha~\text{and}~6\beta\) | 4. | \(6\alpha~\text{and}~8\beta\) |
Subtopic: Types of Decay |
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Level 1: 80%+
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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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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 |
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Level 1: 80%+
JEE
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If \(M\) be the mass of the nucleus and \(m\) be the sum of the individual masses of the nucleons forming the nucleus, then:
| 1. | \(M\) is slightly more than \(m\) |
| 2. | \(M\) is slightly less than \(m\) |
| 3. | \(M=m\) |
| 4. | \(M\) may be less or more than m depending upon the nature of the nucleus |
Subtopic: Nuclear Binding Energy |
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Level 2: 60%+
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In nuclear fission, \(0.1\%\) of the mass is converted into energy. How much electrical energy can be generated by the fission of \(1~\text{kg}\) of fuel?
1. \(1~\text{kWh}\)
2. \(10^{7}~\text{kWh}\)
3. \(2.5~\text{kWh}\)
4. \(2.5 \times 10^{7}~\text{kWh}\)
1. \(1~\text{kWh}\)
2. \(10^{7}~\text{kWh}\)
3. \(2.5~\text{kWh}\)
4. \(2.5 \times 10^{7}~\text{kWh}\)
Subtopic: Nuclear Energy |
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Level 2: 60%+
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\(\alpha \text-\)particles, \(\beta \text-\)particles and \(\gamma \text-\)rays, each have an energy of \(10~\text{MeV}.\) The increasing order of penetrating powers of the radiations will be:
1. \(\beta>~\alpha>~\gamma\)
2. \(\alpha<~\beta<~\gamma\)
3. \(\gamma=\beta<~\alpha\)
4. \(\alpha<~\beta=\gamma\)
1. \(\beta>~\alpha>~\gamma\)
2. \(\alpha<~\beta<~\gamma\)
3. \(\gamma=\beta<~\alpha\)
4. \(\alpha<~\beta=\gamma\)
Subtopic: Types of Decay |
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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 |
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Level 1: 80%+
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A nucleus of mass number \(189\) splits into two nuclei having mass numbers \(125\) and \(64.\) The ratio of the radius of two daughter nuclei respectively is:
1. \(25:16\)
2. \(1:1\)
3. \(4:5\)
4. \(5:4\)
1. \(25:16\)
2. \(1:1\)
3. \(4:5\)
4. \(5:4\)
Subtopic: Nucleus |
82%
Level 1: 80%+
NEET - 2022
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