Question

The maximum kinetic energy of a photoelectron is 3 electron volt what is its stopping potential

Answer 1

Since K.E max= eVo ......(1)

And given,

K.E max = 3eV.....(2)

From (1) & (2)

3eV = eVo

Vo = 3V

Hence the stopping potential Vo is 3V

Answer 2

Answer :

The value of stopping potential is 3V

Step-by-step explanation :

Given,

Maximum kinetic energy  =  3 electron volt = 3 eV

We know,

Maximum kinetic energy $K.E._{max}$ is given as,

$K.E._{max}$ = e $V_{0}$

where,

$V_{0}$ is stopping potential

Now,

Substituting the value of Maximum kinetic energy $K.E._{max}$  = 3eV;

3 eV = e $V_{0}$

3V = $V_{0}$

3V =  $V_{0}$

Hence,

The value of stopping potential is 3V