The work function of barium and tungsten are 2.5 eV and 4.2 eV, respectively. Check whether these materials are useful in a photocell, which is to be used to detect visible light.
The work function of barium and tungsten are 2.5 eV and 4.2 eV, respectively. Check whether these materials are useful in a photocell, which is to be used to detect visible light.
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whether these materials are useful in a photocell, which is to be used to detect visible light."
Transcribed Image Text:1. The work function of barium and tungsten are 2.5 ev and 4.2 ev, respectively. Check
whether these materials are useful in a photocell, which is to be used to detect visible light.
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