Discuss why potassium and caesium are used in photoelectric cells.

What is a photoelectric cell?

Discuss two uses of photoelectric cells

Why are potassium and cesium, rather than lithium used in photoelectric cells?

Why are potassium and cesium, rather than lithium used in photoelectric cells?

Questions carrying two marks : When caesium can be used in photoelectric cell while lithium cannot be?

Which alkali metal is used in photoelectric cells ?

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement- I: Caesium is used in photoelectric cells. Statement - II : Caesium is most electropositive element.

Which alkali metal is used for making photoelectric cells?

What type of metals are used in photoelectric cells? Give one example.