Atoms and Nuclei PYQs - Last 5 Years
WB JEE / Physics / Modern Physics / 12 recent questions
PhysicsModern Physics2022-2026
Practice 12 WB JEE 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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2022-2026
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Last 5 Years Atoms and Nuclei Questions
Showing 12 of 12 filtered questions.
1Atoms And Nuclei
A radioactive element ${ }_{92}^{242} \mathrm{X}$ emits two $\alpha$－particles，one electron and two positrons．The transformed nucleus is represented by ${ }_P^{234} Y$ ．The value of $P$ is
MCQM+1 / -0.252026
2Atoms And Nuclei
The de-Broglie wavelength of an electron in 4th orbit is (where $r=$ radius of the 1st orbit)
MCQM+2 / -0.52026
3Atoms And Nuclei
The number of undecayed nuclei $N$ in a sample of radioactive material as a function of time $(t)$ is shown in the figure. Which of the following graphs correctly show the relationship between $N$ and the activity ' $A$ '?
MCQ+1 / -0.252025
4Atoms And Nuclei
Let the binding energy per nucleon of nucleus is denoted by ' $E_{b n}$ ' and radius of the nucleus is denoted by ' $r$ '. If mass number of nuclei $A$ and $B$ are 64 and 125 respectively, then
MCQM+2 / -02025
5Atoms And Nuclei
The minimum wavelength of Lyman series lines is $P$, then the maximum wavelength of these lines is
MCQ+1 / -0.252025
6Atoms And Nuclei
A radioactive nucleus decays as follows :
\(X \xrightarrow{\alpha} X_1 \xrightarrow{\beta} X_2 \xrightarrow{\alpha} X_3 \xrightarrow{\gamma} X_4\)
If the mass number and atomic number of ' $X_4$ ' are 172 and 69 respectively, then the ato...
\(X \xrightarrow{\alpha} X_1 \xrightarrow{\beta} X_2 \xrightarrow{\alpha} X_3 \xrightarrow{\gamma} X_4\)
If the mass number and atomic number of ' $X_4$ ' are 172 and 69 respectively, then the ato...
MCQ+1 / -0.252025
7Atoms And Nuclei
Which of the following statement(s) is/are truc in respect of nuclear binding energy ?
(i) The mass energy of a nucleus is larger than the total mass energy of its individual protons and neutrons.
(ii) If a nucleus could be separated into i...
(i) The mass energy of a nucleus is larger than the total mass energy of its individual protons and neutrons.
(ii) If a nucleus could be separated into i...
MCQ+1 / -0.252024
8Atoms And Nuclei
A uniform magnetic field B exists in a region. An electron of charge q and mass m moving with velocity v enters the region in a direction perpendicular to the magnetic field. Considering Bohr angular momentum quantization, which of the foll...
MCQM+2 / -02023
9Atoms And Nuclei
If the potential energy of a hydrogen atom in the first excited state is assumed to be zero, then the total energy of n = \(\infty\) state is,
MCQ+1 / -0.252023
10Atoms And Nuclei
A sample of hydrogen atom in its ground state is radiated with photons of 10.2 eV energies. The radiation from the sample is absorbed by excited ionized He+. Thenwhich of the following statement/s is/are true?
MCQM+2 / -02022
11Atoms And Nuclei
Suppose in a hypothetical world the angular momentum is quantized to be even integral multiples of \({h \over {2\pi }}\). The largest possible wavelength emitted by hydrogen atoms in visible range in a world according to Bohr's model will b...
MCQ+1 / -0.252022
12Atoms And Nuclei
If the kinetic energies of an electron, an alpha particle and a proton having same de-Broglie wavelength are \({\varepsilon _1},{\varepsilon _2}\) and \({\varepsilon _3}\) respectively, then
MCQ+1 / -0.252022