The maximum velocity of photoelectronos ...

The maximum velocity of photoelectronos emitted hy a photoemitter is `1.8 xx 10^(6) m//sec`. Taking `e//m = 1.8 xx 10^(11) C/kg` for electrons, the stopping potential of the emitter is:

`1.82V`

`9.21V`

`11.82V`

`23.64V`

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