Questions
The work function for sodium surface is 2.0 eV and that for aluminum surface is 4.2 eV. The two metals are illuminated with appropriate radiations so as to cause photoemission. Then
detailed solution
Correct option is A
As work function W=hv0, where v0 is the threshold frequency.Greater the work function, greater is the threshold frequency. Therefore, the threshold frequency of sodium will be lesser than that for aluminum.Similar Questions
Threshold wavelength for photoelectric effect on sodium is 5000 . The work function (in x 10-19 J) is _______.
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