Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizGK Question
The work function of a metal is the minimum energy required to:
- Excite an electron
- Remove an electron from the surface
- Ionize an atom
- Break a chemical bond
Answer: Remove an electron from the surface
Work function (φ) is the threshold energy for photoelectric emission. Einstein's equation: K_max = hν - φ. Central to quantum explanation of photoelectric effect. [[NCERT Physics Class 12]]