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प्रश्न
Would you prefer a material with a high work-function or a low work-function to be used as a cathode in a diode?
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उत्तर
We will prefer a material with low work-function to be used as a cathode in a diode, so that electron emission can occur using a small amount of energy.
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संबंधित प्रश्न
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The work function of caesium metal is 2.14 eV. When light of frequency 6 × 1014 Hz is incident on the metal surface, photoemission of electrons occurs. What is the
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