A : The process of photoelecton emission...

A : The process of photoelecton emission and thermionic emission of electrons is different .
R : Photoelectric emission does not depend upon tempereature , whereas thermionic emission is temperature depandent .

If both Assertion & Reason are ture and the reason is the correct explanation of the assertion , then mark (1) .

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion , then mark (2) .

If Assertion is true statement but Reason is false , then mark (3)

If both Assertion and Reason are false statements , then mark (4) .

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