Question

Alkali metals are most suited as photo- sensitive materials due to
(a) Low work function (b) High threshold frequency (c) Low threshold
wavelength (d) None
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Answer 1

Answer:

option a

Explanation:

I hope this will help you

Answer 2

Answer:

alkali metals said to be most suitable for the photoelectric effect because the alkali metal have more and more tendency of loosing electrons and hence makes it easier for the photon to eject it out from the atom with the consumption of less energy