Question #c5144

1 Answer
Dwight
Mar 19, 2017

The energy will be #4.3xx10^(-19) # joules per photon.

Explanation:

The Planck relation between photon energy E and frequency #nu# is

#E=hnu#

The units of #nu# must be hertz, while that of energy should be joules. However, whether you get joules per photon or joules per mole of photons (common in Chemistry) depends on the units (and therefore the value) of #h# you choose.

To get joules per photon, use the value #h = 6.63xx10^(-34) Js#

#E = 6.63xx10^(-34) Js xx 6.5xx10^14 s^(-1)= 4.3xx10^(-19) J#

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