Cut - off Frequency (Threshold Frequency)
Formula: u₀ = (W₀)/(h) Applicable Conditions: The minimum frequency of incident light required for the photoelectric effect to occur. Brief Explanation: When t…
Syllabus path: Modern Physics › Photoelectric Effect
CSCA Exam Prep
This formula is aligned to the CSCA undergraduate admissions exam syllabus. Continue with the linked tutorial and topic practice.
Practice related questions (5) · Start mock exam · Sign up — AI explanations · Membership plans
CSCA Physics Formula Reference
Formula and explanation
Formula: u₀ = (W₀)/(h) Applicable Conditions: The minimum frequency of incident light required for the photoelectric effect to occur. Brief Explanation: When the incident light frequency u equals the cut - off frequency u₀, the initial kinetic energy of photoelectrons is zero. If the frequency is below this value, the photoelectric effect does not occur regardless of light intensity.
Related tutorial and examples
Photoelectric Effect
Modern Physics: Photoelectric Effect 1. Phenomenon & Definition The Photoelectric Effect is the emission of electrons when light shines on a material. The emitted electrons are called photoelectrons, and the resulting current is the photocurrent. Classical Dilemma vs. Quantum Exp…
Plan your next CSCA study step
Use this topic in a focused practice set, then connect it to the exam requirements and timed papers.