NEET UG · Physics · Dual Nature of Radiation and Matter
Work Function and Threshold
NEET asked Work Function and Threshold once in 2017–2026, in 2023. It belongs to Photoelectric Effect, in Dual Nature of Radiation and Matter (Physics).
Updated 2026-10-08
- Times asked
- 1
- in 2017–2026
- Papers
- 1
- of 10
- First asked
- 2023
- the only time
- Chance next paper
- 4%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2023.
How NEET framed it
One-line MCQ is the usual form. Skill tested: application.
- Identify metals emitting photoelectrons
Chance asked next paper 4%
Every question
The question
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2023 Q1The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are 2.14 eV, 2.30 eV and 2.75 eV respectively. If incident…One-line MCQ · Easy
Papers: NEET 2023.
Same topic
Other ideas in Photoelectric Effect
Photoelectric Effect has 13 ideas NEET has asked; 4 of them came up in more than one question.
- de Broglie Wavelength of Particles4× · 2024
- Photon Momentum and Effective Mass3× · 2026
- Effect of Intensity vs. Frequency2× · 2026
- Threshold Wavelength Condition2× · 2026
- Inverse Photoelectric Effectonce · 2023
- Solving Two-State Photoelectric Equationsonce · 2022
- De Broglie Wavelength of Emitted Photoelectrononce · 2021
- Photon Emission Rate from Poweronce · 2021
- de Broglie Wavelength of Accelerated Electronsonce · 2020
- eV to Joule Conversion in Photoelectric Equationsonce · 2020
- De Broglie Wavelength of Photoelectrononce · 2019
- Maximum Velocity of Photoelectronsonce · 2018