All questions
AP Physics 2
15.3 Emission and Absorption Spectra
15.2 The Bohr Model of Atomic Structure
AdvancedMCQMathematicalConceptual19.1k
A schematic diagram showing two concentric circular Bohr orbits around a central positive nucleus labeled +e. The outer orbit has radius r_1 and contains an electron labeled e-. An arrow points radially inward from the outer orbit to an inner orbit of radius r_2 = r_1/4. A wavy arrow representing an emitted photon points outward away from the atom, labeled E_photon. No other labels, lines, text, or axes appear.
Transition of an electron from an orbit of radius \(r_1\) to radius \(r_2 = \dfrac{r_1}{4}\).
An electron of mass \(m\) and charge \(-e\) in a hydrogen atom moves in a circular Bohr orbit of radius \(r_1\) around a fixed nucleus of charge \(+e\). The electron transitions to a lower circular orbit with radius \(r_2 = \dfrac{r_1}{4}\), emitting a single photon of energy \(E_{\text{photon}}\). How does the change in the electron's kinetic energy, \(\Delta K = K_2 - K_1\), compare to the energy of the emitted photon?

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