Question

What is the energy of a single photon of visible light with a wavelength of 500.0 nm? 1 nm=10^-9 m

Answer 1

A. 2.02 * 10^18 J
B. 2.84 * 10^14 J
C. 3.97 * 10^-19 J
D. 4.95 * 10^-19 J

Answer 2

E = h N
h : plancks constant
N : 500 nm

Answer 3

I think that the requested energy E is:
\[\large E = \frac{{hc}}{\lambda } = \frac{{6.62 \times {{10}^{ - 34}} \times 3 \times {{10}^8}}}{{500 \times {{10}^{ - 9}}}} = ...joules\]

Answer 4

as usual
i mess the formula lol

Answer 5

ok! we get 3.972 E -19! so choice C is our solution!! thanks!!:)

Answer 6

yes! correct!