Question
Asked Dec 31, 2019
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photo electric effect is maximum in 

a  Cs

b  Na

c  K

d  Li

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Expert Answer

Step 1

When light falls on any material plates, it emits electron or free carriers. This phenomenon is known as photoelectric effect. The emitted electron is known as photoelectrons.

Step 2

As it is known that photoelectric effect is emmision of electrons when light falls on material plates. Therefore, the photoelectric effect is maximum in that material which have low ionization energy. The given element is alkali metal (Cs, Na, K, and Li). It is known th...

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