Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Assume electrons are accelerated through a potential difference of 20000 V inside a TV picture tube. What is the minimum wavelength that could be produced when the electrons strike the phosphor? (1 Å=1010 m).
 one year ago
 one year ago
Assume electrons are accelerated through a potential difference of 20000 V inside a TV picture tube. What is the minimum wavelength that could be produced when the electrons strike the phosphor? (1 Å=1010 m).
 one year ago
 one year ago

This Question is Closed

twitterBest ResponseYou've already chosen the best response.0
Is this Electricity and Magnetism or Modern Physics?
 one year ago

DiwakarBest ResponseYou've already chosen the best response.1
The electron will have energy=e*V where e is the charge on the electron and V=20000Volts. This is the maximum energy that the photon emitted could have and E=hv=hc/k where k is the wavelength. Hence e*V=hc/k. Solve for k. The energy of the photon in terms of the wavelength of the wave is a concept of modern physics.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.