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naziroh

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

  • one year ago
  • one year ago

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

    • one year ago
  2. naziroh
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    i really don't know. that while i am asking u.

    • one year ago
  3. Mashy
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    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?

    • one year ago
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