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Explain minimum energy required to cause the photo electric

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Reference no: EM13260039

The minimum energy required to cause the photo electric effect in potassium metal is 3.69*10^-19 J. will photoelectrons be produced when light shines on the surface of potassium?if 400 nm radiation is shone on potassium,what is the velocity of the ejected electrons

Reference no: EM13260039

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