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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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5bdd839d-0655-41d7-8c89-559933636fef%2F4787f61c-5807-41a8-895d-ff4c32ac4a17%2F68fnr89_processed.png&w=3840&q=75)
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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