Question

the work function of sodium metal is 1.82 EV find the minimum frequency of radiation required to EMIT the photoelectrons​

Answer 1

Answer:

4×10^19HZ

Explanation:

= work function = 1.82 ev = 2.9 ×10^-19

therefore,

Eo = hu

2.9×10^-19

6.6× 10^-34

therefore, v = 0.4×10^15

= 4×10^19HZ

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