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)                                         [EAMCET (Med.) 2000]

A.            1 : 1                                          
B.            1 : 2
C.            1 : 3                                          
D.            1 : 4
Answer» C.            1 : 3                                          


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