if the threshold frequency of a metal lies in microwave region
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ANSWERGiven,
V 0 =5Vλhc =6.2eV
From Einstein formula,
ANSWERGiven,V 0 =5Vλhc =6.2eVFrom Einstein formula,W= λhc −eV 0 =6.2eV−5eV W=1.2eVλ i hc =1.2eV
ANSWERGiven,V 0 =5Vλhc =6.2eVFrom Einstein formula,W= λhc −eV 0 =6.2eV−5eV W=1.2eVλ i hc =1.2eVλ
ANSWERGiven,V 0 =5Vλhc =6.2eVFrom Einstein formula,W= λhc −eV 0 =6.2eV−5eV W=1.2eVλ i hc =1.2eVλ i = 1.2eV12400eV =10333×10 −10 mλ i =1033.3nmThe wavelength of incident wave comes in the region of ultra violet.
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