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CBSE Class 12-science Answered

two metal A and B have work functions 2eV and 5eV.Which metal will emit electrons when irradiated with a radiation of 400nm?
Asked by krishna | 18 Nov, 2013, 08:15: AM
answered-by-expert Expert Answer
The energy of incident radiation of wavelength 400 nm is
 
 
Thue, the metal A having work function 2 eV will emit electrons.
The metal B has higher work function, hence it cannot emit electrons.
Answered by Romal Bhansali | 18 Nov, 2013, 11:22: AM

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