Question

explain cut off potential​

Answer 1

Answer:

Stopping potential or cut-off potential is defined as the required potential for stopping the removal of an electron from a metal surface when the incident light energy is greater than the work potential of the metal on which the incident light is focused.

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Answer 2

Answer:

Cut-off or stopping potential is that minimum value of negative potential at anode which just stops the photo electric current. ii) The minimum frequency of light below which no photo electric emission will take place is known as threshold frequency.

Explanation:

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