A photon is incident on an electron at rest. The scattered photon has a wavelength of $2.81 \mathrm{pm}$ and moves at an angle of $29.5^{\circ}$ with respect to the direction of the incident photon. (a) What is the wavelength of the incident photon? (b) What is the final kinetic energy of the electron?
Added by Lisa A.
Step 1
81 \, \text{pm} - \frac{2.426 \, \text{pm} \times (1 - \cos(29.5^\circ))}{\frac{h}{m_ec}}\] \[\lambda = 2.81 \, \text{pm} - 0.31 \, \text{pm} = 2.5 \, \text{pm}\] Show more…
Show all steps
Your feedback will help us improve your experience
Penny Riley and 61 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
An incident $x$ -ray photon is scattered from a free electron that is initially at rest. The photon is scattered straight back at an angle of $180^{\circ}$ from its initial direction. The wavelength of the scattered photon is 0.0830 $\mathrm{nm.}$ (a) What is the wavelength of the incident photon? (b) What is the magnitude of the momentum of the electron after the collision? (c) What is the kinetic energy of the electron after the collision?
An incident $x$ -ray photon of wavelength 0.0900 nm is scattered in the backward direction from a free electron that is initially at rest. (a) What is the magnitude of the momentum of the scattered photon? (b) What is the kinetic energy of the electron after the photon is scattered?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD