What is the stoping voltage

  • Thread starter bayan
  • Start date
  • #1
203
0
Hi everyone.

I came across with a problem in my question book which was

"what is the stoping voltage when a UV ligh with WaveLength 200nm hits a clean gold surface.(5.1v Work Function.)"


I have found the frequency which is [tex]1.5^15 Hz[/tex] I know the [tex]W[/tex] Therefore I can let [tex]Ekmax=(hf)-W[/tex] and [tex]Ekmax=qV[/tex]

But when I put the equations together they dont make any sence to me.
[tex]V=\frac{(hf)-W}{q}[/tex]

Can someone help me through this plz
 

Answers and Replies

  • #2
dextercioby
Science Advisor
Homework Helper
Insights Author
13,141
696
1.You should have posted this in the homework section.

2.Why don't they make any sense?

It looks okay so far.

Daniel.
 

Related Threads on What is the stoping voltage

  • Last Post
Replies
18
Views
7K
  • Last Post
Replies
1
Views
840
  • Last Post
Replies
7
Views
686
  • Last Post
Replies
9
Views
373
  • Last Post
Replies
22
Views
7K
Replies
5
Views
2K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
2
Views
21K
Replies
3
Views
4K
Replies
7
Views
2K
Top