JEE Main Physics · Dual Nature of Radiation and Matter
Work Function and Threshold
Work Function and Threshold (Dual Nature of Radiation and Matter) was asked 4 times in 4 JEE Main shifts, 2022–2025, out of the 42 shifts Lumi analysed.
- Times asked
- 4
- in 4 shifts
- Years
- 2022–2025
- Usual format
- Single correct
- Application
- Pattern
- Comes in cycles
- repeats across shifts
How it is asked
- Count correct statements on photoelectric effect
- Identify colour of light above threshold
Difficulty
Easy 3Medium 1Hard 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 4 questions
Newest first, each with its options and official answer.
- 3 Apr 2025, Shift 1 · Q43The work function of a metal is 3 eV. The color of the visible light that is required to cause emission of photoelectrons isEasySingle correct
- 7 Apr 2025, Shift 1 · Q52Which of the following statements are correct, if the threshold frequency of caesium is Hz? A. When Cs is placed…MediumOtherHas a figure
- 31 Jan 2024, Shift 2 · Q46In a photoelectric effect experiment a light of frequency 1.5 times the threshold frequency is made to fall on the surface of…EasySingle correct
- 29 Jun 2022, Shift 1 · Q37Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The photoelectric…EasyAssertion–reason