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![[Post New]](/templates/default/images/icon_minipost_new.gif) 31 Jan 2007 15:17:44 IST
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why does a free electron not absorb all the energy of a photon which collides with it?
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4 Feb 2007 16:25:07 IST
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acc. to eintein's theory photoelectric work function h  1=h 0 + kinetic energy h 1 is energy of incident light and h 0 is a photoelectric work function. So all the photns are not absorbed by any free electron. |
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6 Feb 2007 10:06:07 IST
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It does absorbs al the energy. But it spents some part of it in coming out of lattice (Which will be equall to workfunction plus some enegy that may be lost in collisions) Rest is left in form of KE of electron
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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16 Mar 2007 22:39:03 IST
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mr. krishna its a free electron.
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16 Mar 2007 22:52:21 IST
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dear aatish, the einsteins photoelectric eqn. is nothing but the law of conservation of energy.the energy if the electron is to absorb completely then all of it will be converted to ke. because it is already in the exited state, so there is no term as such like photoelectric work function over here.
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18 Jun 2007 10:37:03 IST
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IN AN IDEALISED WORLD THE ELECTRON WILL SURELY ABSORB ALL THE ENERGY BUT AS WE KNOW DURING COLLISIONS THERE ARE VARIOUS TYPE OF ENERGY LOSSES LIKE HEAT AND SOUND.
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6 Jul 2007 22:00:10 IST
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at the level of electrons and photons the world is highly idealised yaar that not even gravitational force can show its effect.
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27 Jul 2007 10:35:00 IST
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i dont know
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