Among the following, number of metal/s which can be used as electrodes in the photoelectric cell is _______ (Integer answer)
(A) Li (B) Na (C) Rb (D) Cs
Option: 1 1
Option: 2 -
Option: 3 -
Option: 4 -
Only Cs is used in photoelectric cell due to its very low ionization potential.
Answer : 1
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