Question

*thermal expansion of metal

1)we can assume that lattice of solid follows simple harmonic motion.

how can we explain thermal expansion of solid?

explain please

(hint:consider statistical fact that as T goes up,the probability to have state of higer level quantimisation goes up.so consider <x> )

b)draw potential(U=U(x)) so as to be stretched as temperature goes up in accordance with experiemét situation.

and write simple mathematical form

Answer 1

thermal eXn Josies Woe KT L. da

Dotes nナ1 2 vl バ 3/ eenク ひ KT 1 an for Pnhe mon dn
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