- 1(current)
Q. No.Four statements are given (\(A\) is mass numbers):
Choose the correct answer from the options given below.
1. \((\mathrm{B})\) and \((\mathrm{D})\) are True but \((\mathrm{A})\) and \((\mathrm{C})\) are False
2. \((\mathrm{A})\) and \((\mathrm{D})\) are True, but \((\mathrm{B})\) and \((\mathrm{C})\) are False
3. \((\mathrm{A})\) and \((\mathrm{C})\) are True, but \((\mathrm{B})\) and \((\mathrm{D})\) are False
4. \((\mathrm{B})\) and \((\mathrm{C})\) are True but \((\mathrm{A})\) and \((\mathrm{D})\) are False
| \((\mathrm{A})\) | The volume of a nucleus is proportional to \(A^{1/3}.\) |
| \((\mathrm{B})\) | The volume of a nucleus is proportional to \(A.\) |
| \((\mathrm{C})\) | The difference in mass of an atom and its nucleus is called the mass defect. |
| \((\mathrm{D})\) | The difference in mass of a nucleus and its constituents is called the mass defect. |
1. \((\mathrm{B})\) and \((\mathrm{D})\) are True but \((\mathrm{A})\) and \((\mathrm{C})\) are False
2. \((\mathrm{A})\) and \((\mathrm{D})\) are True, but \((\mathrm{B})\) and \((\mathrm{C})\) are False
3. \((\mathrm{A})\) and \((\mathrm{C})\) are True, but \((\mathrm{B})\) and \((\mathrm{D})\) are False
4. \((\mathrm{B})\) and \((\mathrm{C})\) are True but \((\mathrm{A})\) and \((\mathrm{D})\) are False
Subtopic: Â Mass-Energy Equivalent |
 55%
Level 3: 35%-60%
NEET - 2026
Please attempt this question first.
Hints
Please attempt this question first.
The energy equivalent of one atomic mass unit is:
1. \(1.6\times 10^{-19}~\text{J}\)
2. \(6.02\times 10^{23}~\text{J}\)
3. \(931~\text{MeV}\)
4. \(9.31~\text{MeV}\)
1. \(1.6\times 10^{-19}~\text{J}\)
2. \(6.02\times 10^{23}~\text{J}\)
3. \(931~\text{MeV}\)
4. \(9.31~\text{MeV}\)
Subtopic: Â Mass-Energy Equivalent |
 83%
Level 1: 80%+
Hints
Subtopic: Â Mass-Energy Equivalent |
Level 3: 35%-60%
Hints
The energy equivalent of \(0.5~\text g\) of a substance is:
| 1. | \(4.5\times10^{13}~\text J\) | 2. | \(1.5\times10^{13}~\text J\) |
| 3. | \(0.5\times10^{13}~\text J\) | 4. | \(4.5\times10^{16}~\text J\) |
Subtopic: Â Mass-Energy Equivalent |
 65%
Level 2: 60%+
NEET - 2020
Hints
Links
If an electron and a positron annihilate, then the energy released is:
1. \(3.2\times 10^{-13}~\text{J}\)
2. \(1.6\times 10^{-13}~\text{J}\)
3. \(4.8\times 10^{-13}~\text{J}\)
4. \(6.4\times 10^{-13}~\text{J}\)
1. \(3.2\times 10^{-13}~\text{J}\)
2. \(1.6\times 10^{-13}~\text{J}\)
3. \(4.8\times 10^{-13}~\text{J}\)
4. \(6.4\times 10^{-13}~\text{J}\)
Subtopic: Â Mass-Energy Equivalent |
 65%
Level 2: 60%+
Hints
A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in the fusion reaction is \(0.02866\) u. The energy liberated per nucleon is: (Given \(1\) u = \(931\) MeV)
| 1. | \(26.7\) MeV | 2. | \(6.675\) MeV |
| 3. | \(13.35\) MeV | 4. | \(2.67\) MeV |
Subtopic: Â Mass-Energy Equivalent |
 53%
Level 3: 35%-60%
AIPMT - 2013
Hints
Calculate the \(Q\text-\)value of the nuclear reaction:
\(2~{ }_{6}^{12} \mathrm{C}\rightarrow{ }_{10}^{20} \mathrm{Ne}+{ }_2^4 \mathrm{He}\)
The following data are given:
\(m({ }_{6}^{12} \mathrm{C})=12.000000~\text{amu}\)
\(m({ }_{10}^{20} \mathrm{Ne})=19.992439~\text{amu}\)
\(m({ }_{2}^{4} \mathrm{He})=4.002603~\text{amu}\)
1. \(3.16~\text{MeV}\)
2. \(5.25~\text{MeV}\)
3. \(3.91~\text{MeV}\)
4. \(4.65~\text{MeV}\)
\(2~{ }_{6}^{12} \mathrm{C}\rightarrow{ }_{10}^{20} \mathrm{Ne}+{ }_2^4 \mathrm{He}\)
The following data are given:
\(m({ }_{6}^{12} \mathrm{C})=12.000000~\text{amu}\)
\(m({ }_{10}^{20} \mathrm{Ne})=19.992439~\text{amu}\)
\(m({ }_{2}^{4} \mathrm{He})=4.002603~\text{amu}\)
1. \(3.16~\text{MeV}\)
2. \(5.25~\text{MeV}\)
3. \(3.91~\text{MeV}\)
4. \(4.65~\text{MeV}\)
Subtopic: Â Mass-Energy Equivalent |
 57%
Level 3: 35%-60%
Hints
If a proton and anti-proton come close to each other and annihilate, how much energy will be released?
| 1. | \(1.5 \times10^{-10}~\text{J}\) | 2. | \(3 \times10^{-10}~\text{J}\) |
| 3. | \(4.5 \times10^{-10}~\text{J}\) | 4. | None of these |
Subtopic: Â Mass-Energy Equivalent |
 57%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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