NEET Physics Kinetic Theory of Gases Questions Solved

NEET - 2009

The mean free path of electrons in a metal is 4×10-8m.The electric field which can give on an average 2 eV energy to an electron in the metal will be in unit of Vm-1

(a) 8×107                              (b) 5×10-11

(c) 8×10-11                          (d) 5×107

    Energy=2eV

     eV0=2 eV

 V0=2

Now, electric field E=24×10-8

                          =0.5×108

                         =5×107 Vm-1

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