CUET Preparation Today
CUET
Physics
Dual Nature of Radiation and Matter
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-
3.1 V
1. 2 V
Zero
Infinite
$eV_s=\frac{12400}{4000}-1.9=3.1-1.9$
$eV_s=1.2eV$
$V_s=1.2V$