The energy equivalent of one atomic mass unit is:

1. 1.6×10-19 J 

2. 6.02×1023 J

3. 931 MeV 

4. 9.31 MeV

Subtopic:  Mass-Energy Equivalent |
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A nuclear reaction along with the masses of the particle taking part in it is as follows;

   A  +  B    C  +  D  +  Q MeV
1.002  1.004   1.001  1.003
amu     amu     amu   amu

The energy Q liberated in the reaction is:

1. 1.234 MeV

2. 0.931 MeV

3. 0.465 MeV

4. 1.862 MeV

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Determine the energy released in the process:

H21+H21H2e4+Q

Given: M H21= 2.01471 amu

            MH2e4= 4.00388 amu

1. 3.79 MeV
2.13.79 MeV
3. 0.79 MeV 
4. 23.79 MeV

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If an electron and a positron annihilate, then the energy released is:

1. 3.2×10-13 J       

2. 1.6×10-13 J

3. 4.8×10-13 J           

4. 6.4×10-13 J

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The energy required in \(\mathrm{MeV} / \mathrm{c}^2\) to separate \({ }_8^{16} \mathrm{O}\) into its constituents is:
(Given mass defect for \({ }_8^{16} \mathrm{O}=0.13691 \mathrm{u}\))
1. \(127.5\)
2. \(120.0\)
3. \(222.0\)
4. \(119.0\)

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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:  Mass-Energy Equivalent |
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AIPMT - 2013
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The energy equivalent of \(0.5\) g of a substance is:
1. \(4.5\times10^{13}\) J
2. \(1.5\times10^{13}\) J
3. \(0.5\times10^{13}\) J
4. \(4.5\times10^{16}\) J

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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
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=Calculate the Q-value of the nuclear reaction:
\(2~{ }_{6}^{12} \mathrm{C}\rightarrow{ }_{10}^{20} \mathrm{Ne}+{ }_2^4 \mathrm{He}\)
The following data are given:
\(m({ }_{6}^{12} \mathrm{C})=12.000000~\text{u}\)
\(m({ }_{10}^{20} \mathrm{Ne})=19.992439~\text{u}\)
\(m({ }_{2}^{4} \mathrm{He})=4.002603~\text{u}\)
1. \(3.16~\text{MeV}\)
2. \(5.25~\text{MeV}\)
3. \(3.91~\text{MeV}\)
4. \(4.65~\text{MeV}\)

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The rest energy of an electron is:

1. 510 KeV 2. 931 KeV
3. 510 MeV 4. 931 MeV
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