Physics · 2026
JEE Main · 6 April 2026, Shift 1 · Q48
The energy released when 7/17.13 kg of _3^7 Li is converted into _2^4 He by proton bombardment is α × 10^32 eV. The value of α is ____. (Nearest…
The energy released when $\displaystyle \frac{7}{17.13} \mathrm{~kg}$ of $\displaystyle { }_3^7 \mathrm{Li}$ is converted into $\displaystyle { }_2^4 \mathrm{He}$ by proton bombardment is $\displaystyle \alpha \times 10^{32} \mathrm{eV}$. The value of $\displaystyle \alpha$ is $\displaystyle \_\_\_\_$. (Nearest integer) (Mass of $\displaystyle { }_3^7 \mathrm{Li}=7.0183 \mathrm{u}$, mass of $\displaystyle { }_2^4 \mathrm{He}=4.004 \mathrm{u}$, mass of proton $\displaystyle =1.008 \mathrm{u}$ and $\displaystyle 1 \mathrm{u}=931 \mathrm{MeV} / \mathrm{c}^2$ and Avogadro number $\displaystyle =6.0 \times 10^{23}$ )
Official answer
From NTA’s final answer key for this paper.
6
More from Atoms and Nuclei
- In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit (f). The…2026
- The energy released if hydrogen atoms are combined to form _2^4 He is ____ MeV. (Take binding energies per…2026
- Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass number…2026
- Angular momentum of an electron in a hydrogen atom is (3 h)/(π), then the energy of the electron is ____ eV.2026
- The binding energy per nucleon of _83^209 Bi is ____ MeV. [Take m(_83^209 Bi)=208.980388 u, m_p=1.007825 u,…2026
- Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows spontaneous α -decay with…2026
- Assuming the experimental mass of _6^12 C as 12 u, the mass defect of _6^12 C atom is ____ MeV / c^2. (Mass…2026
- The ratio of momentum of the photons of the 1^st and 2^nd line of Balmer series of Hydrogen atoms is α / β.…2026
JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.