- #1
Kara386
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Homework Statement
An isolated macroscopic system at 300K absorbs a photon with ##\lambda = 550nm##. What is the relative increase ##\frac{\Delta \Omega}{\Omega}## in microstates.
Homework Equations
The Attempt at a Solution
The energy of the photon is ##E = \frac{hc}{\lambda}## so that would be the change in internal energy. And ##dU = TdS - pdV## but I assume ##dV = 0## so ##dU = TdS##.
##S = k \ln(\Omega)## so I think ##dS = k d\ln(\Omega)##:
##d \ln(\Omega) = \frac{hc}{\lambda T}##
If that's all ok, I don't know how to get from there to ##\Delta \Omega## or how to get the relative increase in ##\Omega##! Thanks for any help!