JEE Main · Physics · Dual Nature of Radiation and Matter
Solving via Two Wavelength Data Points
JEE Main asked Solving via Two Wavelength Data Points 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2026. It belongs to Photoelectric Effect, in Dual Nature of Radiation and Matter (Physics). The longest wait between two years asking it was 4 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2022
- last in 2026
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2022 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Single correct is the usual form. Skill tested: application.
- Work function from two wavelength data
- Work function from two wavelengths
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 8 Apr 2026, Shift 2 · Q43 and be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength…MediumSingle correct
- 25 Jul 2022, Shift 1 · Q47A metal exposed to light of wavelength nm and and emits photoelectrons with a certain kinetic energy. The maximum kinetic energy of…MediumSingle correct
Shifts: 25 Jul 2022, Shift 1, 8 Apr 2026, Shift 2.
Same topic
Other ideas in Photoelectric Effect
Photoelectric Effect has 15 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.
- Einstein's Photoelectric Equation14× · 2026
- Work Function and Threshold10× · 2025
- Two-Wavelength System of Equations7× · 2026
- Photon Flux and Beam Power7× · 2024
- Photon Energy and Momentum5× · 2026
- Stopping Potential4× · 2024
- Stopping Potential vs Frequency Graph4× · 2023
- Intensity vs Frequency Effects3× · 2024
- Comparative Graphs for Different Metals2× · 2026
- Failure of Classical Wave Theory2× · 2024
- K_max versus Frequency Graph2× · 2024
- Photoelectrons in a Magnetic Field2× · 2021