Have a look at these animations and answer the following questions about animation 2
http://www.absorblearning.com/media/item.action?quick=18f
https://phet.colorado.edu/en/simulation/photoelectric
Get zinc and tick show photons.
Adjust light to UV and watch what happens. Explain why.
What happens at higher frequency light and why?
What happens if you apply a voltage across the plate and why?
The work function of a metal is 1.1 x 10
^-19J. Calculate;
•a) threshold frequency
•b) maximum k.e. of emitted electrons when light of
wavelength 520nm is shone on the metal.
Graph questions
What
does this graph show?
Work
out the gradient of your graph – what does it represent?
What
is the x intercept?
How
does the graph relate to the straight line graph equation y=mx+c?
What
would the y intercept be?
No comments:
Post a Comment