Work Function Hard
Work function φ physically represents minimum energy to:
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About This Question
- Subject
- physics
- Chapter
- dual nature of radiation and matter
- Topic
- work function hard
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Remove electron from surface
The Work Function (Φ) is the minimum energy required to liberate an electron from the surface of a solid (usually a metal) into vacuum.
- Specifically, it is the energy difference between the Fermi level and the vacuum level.
- Different metals have different work functions. Lower Φ means electrons are easier to emit (e.g., Alkali metals).
This hard difficulty physics question is from the chapter dual nature of radiation and matter, covering the topic of work function hard. It appeared in the 2025 exam.
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