[Answered] Assume electrons are accelerated through a potential difference of 25 000 V inside a TV picture ...

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darbym82

Hero Member
Posts: 570

on: Jul 28, 2018

Assume electrons are accelerated through a potential difference of 25 000 V inside a TV picture tube. What is the minimum wavelength that could be produced when the electrons strike the phosphor? (1 = 10-10 m)
a. 0.50
b. 1.0
c. 10
d. 100
e. 0.25

Question 2

How much energy is in an 89.7 MHz photon of FM-radiation?
a. 2.2 10-33 J
b. 9.5 10-27 J
c. 7.4 10-42 J
d. 5.9 10-26 J
e. 3.7 10-25 J

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Marked as best answer by a Subject Expert

mochi09

Sr. Member
Posts: 335

Reply #1 on: Jul 28, 2018

Answer to Question 1

A

Answer to Question 2

D

darbym82

Hero Member
Posts: 570

Reply #2 on: Jul 28, 2018

Thanks

mochi09

Sr. Member
Posts: 335

Reply #3 on: Jul 28, 2018

Welcome

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