The photo electric emissioin requires a threshold frequency v_(0). For – InterviewSolution

1.	The photo electric emissioin requires a threshold frequency v_(0). For a certain metal lamda_(1)=220Å and lamda_(2)=1900Å, produce electrons with a maximum kinetic energy KE_(1) and KE_(2). If KE_(2)=2KE_(1) calculate v_(0) and corresponding lamda_(0).
Answer» ANSWER :`2612.6Å`

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