7) What type of material should be chosen for photoelectron emission?
Ans: The materials with low work function like alkali metals such as potassium (2.29eV), Cesium (2.14eV), sodium (2.36eV), Barium (2.6eV) etc.
Ans: The materials with low work function like alkali metals such as potassium (2.29eV), Cesium (2.14eV), sodium (2.36eV), Barium (2.6eV) etc.
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