Light of wavelength 400 nm is incident continuously on a cesium ball (work function 1.9 eV) The maximum potential to which the ball will be charged is-
Answer & explanation
Correct answer: option 2
$eV_s=\frac{12400}{4000}-1.9=3.1-1.9$
$eV_s=1.2eV$
$V_s=1.2V$