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Question
Which is the best material for photoelectric emission why?
Which is the best material for photoelectric emission why?
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Solution
- Materials with low work functions are typically employed for the photoelectric effect so that electrons can be released from the material by a photon with extremely little energy.
- The work function , is the amount of energy required to induce photoemission of electrons from a metal surface.
- Alkali metals are best for electric emission because of its low ionization potential.
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- Materials with low work functions are typically employed for the photoelectric effect so that electrons can be released from the material by a photon with extremely little energy.
- The work function , is the amount of energy required to induce photoemission of electrons from a metal surface.
- Alkali metals are best for electric emission because of its low ionization potential.
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