1.

The work functions of metals A and B are in the ratio 1 : 2. If light of frequencies f and 2f are  incident on the surfaces of A and B respectively, the ratio of the maximum kinetic energies of photoelectrons emitted is (f is greater than threshold frequency of A, 2f is greater than threshold frequency of B)   

A. 0.0423611111111111
B. 1 : 2 
C. 1 : 3 
D. 0.0444444444444444
Answer» C. 1 : 3 


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