Question 8ci- january 2010 g482 ocr physics Watch

runny4
Badges: 6
Rep:
?
#1
Report Thread starter 4 years ago
#1
in the examiner's report it says: A common misconception was to use the de Broglie wavelength and the energy expression for a photon instead
Why couldn't you do this?
0
reply
Duskstar
Badges: 13
Rep:
?
#2
Report 4 years ago
#2
(Original post by runny4)
in the examiner's report it says: A common misconception was to use the de Broglie wavelength and the energy expression for a photon instead
Why couldn't you do this?
The question is about electrons, not photons, which is why you can't use the energy expression for a photon.
0
reply
runny4
Badges: 6
Rep:
?
#3
Report Thread starter 4 years ago
#3
(Original post by Duskstar)
The question is about electrons, not photons, which is why you can't use the energy expression for a photon.
but isn't the energy of a photon equal to the energy of the electron
0
reply
Duskstar
Badges: 13
Rep:
?
#4
Report 4 years ago
#4
(Original post by runny4)
but isn't the energy of a photon equal to the energy of the electron
No. An electron is a lepton; a photon is a quanta of energy, and can have the same energy as an electron, but not necessarily.
0
reply
runny4
Badges: 6
Rep:
?
#5
Report Thread starter 4 years ago
#5
(Original post by Duskstar)
No. An electron is a lepton; a photon is a quanta of energy, and can have the same energy as an electron, but not necessarily.
but energy is conserved in the photoelectric effect.
0
reply
Duskstar
Badges: 13
Rep:
?
#6
Report 4 years ago
#6
(Original post by runny4)
but energy is conserved in the photoelectric effect.
The question had nothing to do with the photoelectric effect - it was about moving an electron through an electric field or something.
0
reply
runny4
Badges: 6
Rep:
?
#7
Report Thread starter 4 years ago
#7
(Original post by Duskstar)
The question had nothing to do with the photoelectric effect - it was about moving an electron through an electric field or something.
what is a lepton
0
reply
Duskstar
Badges: 13
Rep:
?
#8
Report 4 years ago
#8
(Original post by runny4)
what is a lepton
I'm doing AQA Physics, so my spec probably isn't the same as yours. Anyway, subatomic particles are split into groups - Leptons and Hadrons. Leptons include electrons and neutrinos; Hadrons include protons and neutrons.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of East Anglia
    PGCE Open day Postgraduate
    Tue, 3 Mar '20
  • University of Bradford
    Postgraduate Open day/Evening Postgraduate
    Tue, 3 Mar '20
  • Queen's University Belfast
    Postgraduate LIVE Masters & PhD Study Fair Postgraduate
    Wed, 4 Mar '20

Do you get study leave?

Yes- I like it (498)
59.71%
Yes- I don't like it (43)
5.16%
No- I want it (237)
28.42%
No- I don't want it (56)
6.71%

Watched Threads

View All