The Work Function for a Certain Sample Is 2

Multiple Choice

The work function for a certain sample is 2.3 eV.The stopping potential for electrons ejected from the sample by 7.0 * 10¹⁴-Hz electromagnetic radiation is:

A) 0 V
B) 0.60 V
C) 2.3 V
D) 2.9 V
E) 5.2 V