Physics Trial Question (1 Viewer)

[Kukudas]

HELP ME!~!~ T_T

Q. Discuss the ability of the wave model of light to explain the photoelectric effect (4 marks)

Marking Guidelines
4 marks answer indicates
- waves to transfer energy - can explain electrons gaining energy
- problem with threshold frequency
- problem with effect of increased intensity
answer need to clearly indicate how wave model can or cannot explain
photoelectric effect

Q. Explain the photoelectric effect using Einstein's model for light (3 marks)

Marking Guidelines
3 marks answer indicates
- light consist of photons E=hf
- threshold frequency using photon model
- increase in kinetic energy of electrons when frequency increased

Can someone, if u have time, please write me a sample answer T_T
Thank You!!!

 

[Fuzzy Juzzy]

Follow the marking guidelines

hth...

 

[littlemaster]

Marking guidelines sums it up pretty well:

Q1 - discuss = pros and cons, therefore talk about how well it explains it, and what aspects it doesn't cover( which are covered by the particle model)

Q2- Einstein = light exists as photons, talkabout threshold frequency and work function