Stopping Potential
Mediumphysics
Stopping potential V0 relates to K_max by?
Select the correct option:
Solution
Incorrect! Answer:
eV0=Kmax
- Definition of Stopping Potential (V0): The negative potential applied to the collector plate that is just sufficient to stop the fastest moving photoelectrons from reaching it.
- Energy Relation: At the stopping potential, the work done by the retarding electric field on the electron must equal its maximum kinetic energy.
- Equation: W=qV⟹ Energy =eV0.
- Final Link: Kmax=eV0.
- Combined Equation: eV0=hf−ϕ, which allows for experimental determination of Planck's constant.
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
About This Question
- Subject
- physics
- Chapter
- dual nature
- Topic
- stopping potential
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
eV0=Kmax
- Definition of Stopping Potential (V0): The negative potential applied to the collector plate that is just sufficient to stop the fastest moving photoelectrons from reaching it.
- Energy Relation: At the stopping potential, the work done by the retarding electric field on the electron must equal its maximum kinetic energy.
- Equation: W=qV⟹ Energy =eV0.
- Final Link: Kmax=eV0.
- Combined Equation: eV0=hf−ϕ, which allows for experimental determination of Planck's constant.
This medium difficulty physics question is from the chapter dual nature, covering the topic of stopping potential. It appeared in the 2025 exam.
Looking for more practice? Explore all physics questions or browse dual nature questions on RankGuru.