Atoms and Nuclei PYQs - Last 10 Years
IAT (IISER) / Physics / Modern Physics / 6 recent questions
PhysicsModern Physics2017-2026
Practice 6 IAT (IISER) Physics questions from Atoms and Nuclei. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2020-2026
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Last 10 Years Atoms and Nuclei Questions
Showing 6 of 6 filtered questions.
1Atoms And Nuclei
The three numbers: (number of protons, number of neutrons, the radius) characterize a nucleus. What is the value of $\dfrac{r_1}{r_2}$ for two nuclei characterized by $(1, 0, r_1)$ and $(4, 4, r_2)$?
MCQ+4 / -12026
2Atoms And Nuclei
An electron in the ground state (with energy $E_1$ ) of a hydrogen atom, absorbs a photon of energy $E_a$, and gets excited to a higher energy level of principal quantum number $n$. What is the value of $n$ ?
MCQ+4 / -12025
3Atoms And Nuclei
Atomic masses of two oxygen isotopes ${ }_8^{16} \mathrm{O}$ and ${ }_8^{18} \mathrm{O}$ are 15.99491 u and 17.99916 u , respectively, where $u$ is the atomic mass unit. Masses of protom and neutron are given by 1.00727 u and I .00866 u , r...
MCQ+4 / -12024
4Atoms And Nuclei
Consider the Bohr model of an atom where an electron of charge $-e$ revolves around a nucleus of charge $+e$ in an orbit of radius $r$. The electron has an orbital angular momentum $2 h$. If the nucleus had charge $+2 e$, what would have be...
MCQ+4 / -12023
5Atoms And Nuclei
Consider that in a fission of a single Plutonium ( $\mathrm{Pu}^{239}$ ) atom 207 MeV energy is released. Assuming all atoms of Plutonium undergo fission, which of the following options is the closest estimate of the amount of Plutonium req...
MCQ+4 / -12022
6Atoms And Nuclei
An electron of mass $m_e$ has a speed $u_n$ in the $n^{\text {th }}$ Bohr orbit of a hydrogen atom. The normalized speed $V_n$ is given as $V_n=u_n / c=1 / 685$ and the mass of the electron in the units of energy is given as $M_e=m_e c^2=0....
MCQ+4 / -12020