JEE Main Physics · Dual Nature of Radiation and Matter
Two-Wavelength System of Equations
Two-Wavelength System of Equations (Dual Nature of Radiation and Matter) was asked 3 times in 3 JEE Main shifts, 2023–2026, out of the 42 shifts Lumi analysed.
- Times asked
- 3
- in 3 shifts
- Years
- 2023–2026
- Usual format
- Single correct
- Calculation
- Pattern
- Frequent
- repeats across shifts
How it is asked
- Threshold wavelength from two stopping potentials
- Threshold wavelength from stopping potentials
Difficulty
Easy 0Medium 3Hard 0
Where it sits
Chapter: Dual Nature of Radiation and Matter. Topic: Photoelectric Effect, 22 questions over 10 ideas.
Other repeat ideas in this topic
Every time it came
All 3 questions
Newest first, each with its options and official answer.
- 2 Apr 2026, Shift 1 · Q42For a certain metal, when monochromatic light of wavelength is incident, the stopping potential for photoelectrons is .…MediumSingle correct
- 31 Jan 2024, Shift 1 · Q46When a metal surface is illuminated by light of wavelength , the stopping potential is 8V. When the same surface is illuminated…MediumSingle correct
- 11 Apr 2023, Shift 1 · Q34A metallic surface is illuminated with radiation of wavelength , the stopping potential is . If the same surface is…MediumSingle correct