The energy equivalent of one atomic mass unit is:

1. $1.6×{10}^{-19}$ $J$

2. $6.02×{10}^{23}$ $J$

3. 931 MeV

4. 9.31 MeV

Subtopic:  Mass-Energy Equivalent |
82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A nuclear reaction along with the masses of the particle taking part in it is as follows;

The energy Q liberated in the reaction is:

1. 1.234 MeV

2. 0.931 MeV

3. 0.465 MeV

4. 1.862 MeV

Subtopic:  Mass-Energy Equivalent |
75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Determine the energy released in the process:

${}_{1}H_{2}+{}_{1}H_{2}\to {}_{2}H{e}^{4}+Q$

Given: M $\left({}_{1}H_{2}\right)$= 2.01471 amu

M$\left({}_{2}H{e}^{4}\right)$= 4.00388 amu

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

Subtopic:  Mass-Energy Equivalent |
70%
From NCERT
Hints

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

1. $3.2×{10}^{-13}$ $\mathrm{J}$

2. $1.6×{10}^{-13}$ $\mathrm{J}$

3. $4.8×{10}^{-13}$ $\mathrm{J}$

4. $6.4×{10}^{-13}$ $\mathrm{J}$

Subtopic:  Mass-Energy Equivalent |
63%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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. $$119.0$$

Subtopic:  Mass-Energy Equivalent |
68%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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 |
50%
From NCERT
AIPMT - 2013
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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

Subtopic:  Mass-Energy Equivalent |
62%
From NCERT
NEET - 2020
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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:  Mass-Energy Equivalent |
54%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

=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. $$4.65~\text{MeV}$$

Subtopic:  Mass-Energy Equivalent |
53%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The rest energy of an electron is:

 1 510 KeV 2 931 KeV 3 510 MeV 4 931 MeV
Subtopic:  Mass-Energy Equivalent |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch