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Photoelectric effect is the maximum in...

Photoelectric effect is the maximum in

A

Cs

B

Na

C

K

D

Li

Text Solution

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The correct Answer is:
A
The phenomenon of emission of electron from surface of metal by exposing it to visible light is called photoelectric effect. Alll alkali metals (except lithium) exhibit photoelectric effect. This ability to exhibit photoelectric effect is due to exhibit photoelectric effect is due to low value of their ionisation energies. Among alkali metals Cs having least ionisation energy exhibit maximum photoelectric effect.
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