premium feature crown icon
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
In a nuclear reaction the following quantities is/are conserved:
1. kinetic energy 2. mass
3. momentum 4. all the above
Subtopic:  Mass-Energy Equivalent |
Level 3: 35%-60%

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In a nuclear reaction (involving atomic nuclei only), the sum of kinetic energies of the product nuclei was found to be greater than that of the reactants. This means that:
1. some nucleons are created
2. some nucleons are destroyed
3. energy is converted into mass
4. mass is converted into energy
Subtopic:  Mass-Energy Equivalent |
 65%
Level 2: 60%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


premium feature crown icon
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly

Given the following particle masses:
\(m_p=1.0072~\text{u}\) (proton)
\(m_n=1.0087~\text{u}\) (neutron)
\(m_e=0.000548~\text{u}\) (electron)
\(m_\nu=0~\text{u}\) (antineutrino)
\(m_d=2.0141~\text{u}\) (deuteron)
Which of the following processes is allowed, considering the conservation of energy and momentum?

1. \(n+p \rightarrow d+\gamma\)
2. \(e^{+}+e^{-} \rightarrow \gamma\)
3. \(n+n\rightarrow \text{}\) deuterium atom (electron bound to the nucleus)
4. \(p \rightarrow n+e^{+}+\nu\)
Subtopic:  Mass-Energy Equivalent |
Level 3: 35%-60%
JEE

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement

The energy equivalent of \(2~\text g\) of substance is:
(the velocity of light \(c=3\times10^8~\text{m/s}\) )
1. \(1.8\times 10^9 ~\text J\) 
2. \(1.8\times 10^{14} ~\text J\) 
3. \(1.8\times 10^{-15} ~\text J\) 
4. \(1.8\times 10^{17} ~\text J\) 
Subtopic:  Mass-Energy Equivalent |
 82%
Level 1: 80%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In a reactor, \(2\) kg of \({ }_{92} \mathrm{U}^{235}\) fuel is fully used up in \(30\) days. The energy released per fission is \(200\) MeV. Given that the Avogadro number, \(\mathrm{N}=6.023 \times 10^{26}\) per kilo mole and \(1~ \mathrm{eV}=1.6 \times 10^{-19}~\text{J}\). The power output of the reactor is close to:
1. \(125 ~\text{MW}\)
2. \(60~\text{MW}\)
3. \(35 ~\text{MW}\)
4. \(54 ~\text{MW}\)

Subtopic:  Mass-Energy Equivalent |
 69%
Level 2: 60%+
JEE

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.