Question

The potential difference that must be applied to stop the fastest photoelectrons emitted by a nickel surface , having work function 5.01 , when ultraviolet light of 200nm falls on it , must be
(1)1.2 V
(2)2.4V
(3)-1.2V
(4)-2.4V

Answer 1

this may help u........

Answer 2

Answer:

-1.2

Explanation:

stopping potential is opposite of the maximum potential possessed by an electron