1.

The stopping potential \[({{V}_{0}})\] versus frequency (n) plot of a substance is shown in figure the threshold wave length is

A.            \[5\times {{10}^{14}}m\]
B.            6000Å
C.            5000 Å                                     
D.            Cannot be estimated from given data
Answer» C.            5000 Å                                     


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