All questions
AP Physics 2
15.5 The Photoelectric Effect
15.1 Quantum Theory and Wave-Particle Duality
AdvancedMCQMathematical19.5k
A schematic diagram of a photoelectric cell setup. On the left, a flat vertical plate represents a metal cathode labeled with work function \Phi. Wavy incoming arrows representing light of frequency f hit the cathode. Small circles with minus signs represent photoelectrons moving to the right toward a vertical anode plate. A voltage supply connected between the cathode and anode provides an accelerating potential difference labeled \Delta V. No other labels, lines, text, or axes appear.
Photoelectric cell with an accelerating potential difference.
In a photoelectric experiment, monochromatic light of frequency \(f\) illuminates a cathode with work function \(\Phi\), causing photoelectrons of mass \(m\) and charge magnitude \(e\) to be emitted. An accelerating potential difference \(\Delta V\) is applied between the cathode and an anode to speed up the emitted photoelectrons as they travel toward the anode. Which of the following expressions represents the de Broglie wavelength \(\lambda\) of the most energetic photoelectrons as they reach the anode?

Log In to Continue

Accounts are free! Log in to try this question, see explanations, save progress, and more!

Similar Questions

Tools for a 5

The Quiz Lab library of AP Physics quizzes AP aligned mock tests to help you get a 5. With grading, adaptive explanations, and more. Find a Quiz Find, solve, and grade every AP FRQ ever. Find an FRQ Stuck on AP Physics 2? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Find a Tutor Learn AP Physics from scratch, quickly. This is the only course you'll need for the year. A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee. Explore the Course