Question

the cutoff potential is a function of?​

Answer 1

Answer:

Explanation:

The negative potential of the plate 'C' at which the photo electric current becomes zero is called stopping potential or cut-off potential. Stopping potential is that value of retarding potential difference between two plates which is just sufficient to halt the most energetic photo electrons emitted.

Answer 2

Given that,

The cut off potential :

Where the current becomes zero at the negative potential it is called cut off potential.

Cut off potential is called stopping potential.

Cut off potential is that value of slow down potential difference between two plates which is enough to stop the emitted electron.

The potential required to stop emission of electron from conducting surface it is called stopping potential.

Hence, This is required answer.