1.

The work function of metal is 1 eV. Light of wavelength 3000 Å is incident on this metal surface. The velocity of emitted photo-electrons will be                       [MP PMT 1990]

A.            10 m/sec                                
B.            \[1\times {{10}^{3}}\]m/sec
C.            \[1\times {{10}^{4}}m/\sec \]m/sec                              
D.            \[1\times {{10}^{6}}m/\sec \]m/sec
Answer» E.


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