An orange light (f = 5.2 * 10'4Hz) is

shined on a tin surface. Assuming electrons

are ejected, what is the voltage created?

2.145*10^-10 V or 0.2145nV

Explanation:

From hf=eV

h = Plank's constant = 6.6*10^-34JS

f = frequency of the electromagnetic wave = 5.2*10^4 Hz

e = electronic charge = 1.6*10^-19 C

V = voltage

V = hf/e

V = 6.6*10^-34JS * 5.2*10^4 Hz / 1.6*10^-19 C

V = 2.145*10^-10 V or 0.2145nV

Therefore the voltage created is 2.145*10^-10 V or 0.2145nV