Dual Nature of Radiation PYQs - Last 10 Years
JEE Advanced / Physics / Modern Physics / 11 recent questions
PhysicsModern Physics2016-2025
Practice 11 JEE Advanced Physics questions from Dual Nature of Radiation. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 10 Years Dual Nature of Radiation Questions
Showing 11 of 11 filtered questions.
1Dual Nature Of Radiation
A hydrogen atom, initially at rest in its ground state, absorbs a photon of frequency $v_1$ and ejects the electron with a kinetic energy of 10 eV . The electron then combines with a positron at rest to form a positronium atom in its ground...
INTEGER+4 / -02025
2Dual Nature Of Radiation
Consider an electron in the $n=3$ orbit of a hydrogen-like atom with atomic number $Z$. At absolute temperature $T$, a neutron having thermal energy $k_{\mathrm{B}} T$ has the same de Broglie wavelength as that of this electron. If this tem...
INTEGER+4 / -02025
3Dual Nature Of Radiation
A metal target with atomic number $Z=46$ is bombarded with a high energy electron beam. The emission of X-rays from the target is analyzed. The ratio $r$ of the wavelengths of the $K_\alpha$-line and the cut-off is found to be $r=2$. If the...
MCQ+3 / -12024
4Dual Nature Of Radiation
A Hydrogen-like atom has atomic number $Z$. Photons emitted in the electronic transitions from level $n=4$ to level $n=3$ in these atoms are used to perform photoelectric effect experiment on a target metal. The maximum kinetic energy of th...
INTEGER+4 / -02023
5Dual Nature Of Radiation
When light of a given wavelength is incident on a metallic surface, the minimum potential needed to stop the emitted photoelectrons is $6.0 \mathrm{~V}$. This potential drops to $0.6 \mathrm{~V}$ if another source with wavelength four times...
MCQ+3 / -12022
6Dual Nature Of Radiation
In a photoemission experiment, the maximum kinetic energies of photoelectrons from metals P, Q and R are EP, EQ and ER, respectively, and they are related by EP = 2EQ = 2ER. In this experiment, the same source of monochromatic light is used...
INTEGER+4 / -02021
7Dual Nature Of Radiation
A perfectly reflecting mirror of mass M mounted on a spring constitutes a spring-mass system of angular frequency \(\Omega\) such that \({{4\pi M\Omega } \over h} = {10^{24}}{m^{ - 2}}\) with h as Planck's constant. N photons of wavelength...
INTEGER+3 / -02019
8Dual Nature Of Radiation
In a photoelectric experiment a parallel beam of monochromatic light with power of \(200\) \(W\) is incident on a perfectly absorbing cathode of work function \(6.25\) \(ev.\) The frequency of light is just above the threshold frequency so ...
INTEGER+3 / -02018
9Dual Nature Of Radiation
A photoelectric material having work-function \({\phi _0}\) is illuminated with light of wavelength \(\lambda \left( {\lambda < {{he} \over {{\phi _0}}}} \right).\) The fastest photoelectron has a de-Broglic wavelength \({\lambda _d}.\) A ...
MCQ+3 / -0.752017
10Dual Nature Of Radiation
Light of wavelength \(\lambda\)ph falls on a cathode plate inside a vacuum tube as shown in the figure. The work function of the cathode surface is \(\phi\) and the anode is a wire mesh of conducting material kept at a distance d from the c...
MCQM+4 / -22016
11Dual Nature Of Radiation
In a historical experiment to determine Planck's constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for th...
MCQ+3 / -12016