1. Asri did a photoelectric effect experiment using aluminium as the anode. The work function of aluminium is 4.08 eV. X-rays have wavelengths between 10 - 0.01 nm.
(a) What is meant by the phrase ‘work function of aluminium’?
(b) With the aid of a graph (if necessary), explain Asri’s experimental observations and conclusion when he uses
(i) a red incident light of wavelength 650 nm.
(ii) incident X-rays with same intensity but different wavelengths.
(iii) repeat his experiment with incident X-rays with same wavelength but different intensities.
(c) Sketch a graph showing the variation o

Question

1. Asri did a photoelectric effect experiment using aluminium as the anode. The work function of aluminium is 4.08 eV. X-rays have wavelengths between 10 - 0.01 nm.
(a) What is meant by the phrase ‘work function of aluminium’?
(b) With the aid of a graph (if necessary), explain Asri’s experimental observations and conclusion when he uses
(i) a red incident light of wavelength 650 nm.
(ii) incident X-rays with same intensity but different wavelengths.
(iii) repeat his experiment with incident X-rays with same wavelength but different intensities.
(c) Sketch a graph showing the variation o

anonymous · Answer

lets go about this one by one..

what do you think is work function?

anonymous · Answer

i really don't know. that while i am asking u.

anonymous · Answer

well then.. you need to go through your text book and study about this.. before trying to attempt to solve this problem .. 

do you know what photons are ? and what is the expression for energy of an photon?