JEE Main · Physics · Dual Nature of Radiation and Matter
Electron vs Photon (Same Wavelength)
JEE Main asked Electron vs Photon (Same Wavelength) 3 times in 3 of the 108 shifts Lumi analysed, in 2021, 2022 and 2024. It belongs to Matter Waves, in Dual Nature of Radiation and Matter (Physics). The longest wait between two years asking it was 2 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2021
- last in 2024
- Pattern
- Comes in cycles
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021, 2022 and 2024. 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: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 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.
- Ratio of energies at same de broglie wavelength
- Electron and photon with same de broglie wavelength
Difficulty
Every question was multiple choice.
Every question
All 3 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 29 Jan 2024, Shift 1 · Q46The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is 25% of the velocity of light, then…MediumSingle correct
- 26 Jun 2022, Shift 1 · Q47An electron with speed and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of electron…MediumSingle correct
- 25 Jul 2021, Shift 2 · Q19An electron moving with speed and a photon moving with speed , have same D-Broglie wavelength. The ratio of kinetic energy of…EasySingle correct
Shifts: 25 Jul 2021, Shift 2, 26 Jun 2022, Shift 1, 29 Jan 2024, Shift 1.
Same topic
Other ideas in Matter Waves
Matter Waves has 20 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.
- Wavelength Ratios of Different Particles15× · 2026
- Wavelength from Kinetic Energy7× · 2024
- Basic Wavelength-Momentum Relation5× · 2026
- Wavelength from Accelerating Potential5× · 2026
- Time Rate of Change of Wavelength3× · 2025
- Wavelength in E-Field as Function of Time2× · 2026
- Wavelengths in Radioactive Decay2× · 2022
- Matter Wave vs Photon Energy Scaling2× · 2021
- De Broglie Wavelength of Emitted Photoelectronsonce · 2025
- Wavelength in a Uniform Magnetic Fieldonce · 2025
- Graphical Variation of Wavelength vs Momentumonce · 2024
- Thermal De Broglie Wavelengthonce · 2023