I do not need help with this question but you can have a go at it if you want ( plus I can produce another AQA style paper if you want to )
Anyway here goes
1) Monochromatic wavelength of a certain light = 5.40 x 10^-7 is shone on a metal surface of work function = 1.40 x 10^-20 ,
A) Calculate the energy of a single photon
B) Calculate the maximum kinetic energy of a photon emitted from the surface of this metal
C) Explain why the electrons emitted have a kinetic energy up to this maximum
D) Calculate the speed of the fastest moving electron
E) Calculate the frequency of the ELECTRONS which are emitted
F) Calculate the time period of the electrons mentioned above.