- #1
crimsondarkn
- 13
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Homework Statement
This is a pretty simple problem... Yet I got the wrong answer.. Hmm...
"Find the threshold frequency for a calcium surface whose work function is 3.33eV"
W=3.33eV = 3.33eV * 1.6x10^-19 J = 5.33x10^19 J
f = ?
h=6.63x10^-34 J*S
Homework Equations
f=W/h
The Attempt at a Solution
f=(3.33eV)(1.6x10^-19 J) / (6.63x10^-34 J*S) = 8.04x10^14 Hz <- My answerThe answer in book is 5.02 x10^14 Hz.
Can anyone tell me what I'm doing wrong?