The energy of a photon is 6.09 10-20 J. What is its wavelength (in nanometers)?

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The energy of a photon is 6.09 10-20 J. What is its wavelength (in nanometers)?

2007-11-06 03:48:46 · 3 answers · asked by bob S 1 in Science & Mathematics ➔ Physics

3 answers

Use E=hv (v=Nu).

2007-11-06 03:53:51 · answer #1 · answered by Anonymous · 1⤊ 0⤋

E = h * f

6.09 * 10^-20 / 6.626 * 10^-34 = frequency

frquency = 9.191 * 10^13 Hz

C = frequency * wavelength

c / frequecy = wavelength
3 * 10^8 / 9.191 * 10^13 = 3.26 * 10^-6 metres (or 3.26 micrometres)

2007-11-06 11:54:45 · answer #2 · answered by Doctor Q 6 · 1⤊ 0⤋

The equation can also be written as:

E = hc/lambda.

h = Planck's constant
c= speed of light
lambda = wavelength

2007-11-06 11:58:36 · answer #3 · answered by hcbiochem 7 · 1⤊ 0⤋