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57. The temperature at which the average translational kinetic energy of a molecule is equal to the energy gained by an electron in accelerating from rest through a potential difference of 1 volt is

(a)  4.6×103 K                         (b)  11.6×103 K

(c) 23.2×103 K                      (d)  7.7×103 K

Answer-d

(4)

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