The coefficient of apparent expansion of a liquid when determined using two different vessels A and B are gamma1 and gamma2 respectively. If the coefficient of expansion of the vessel A is alpha, the coefficient of linear expansion os the vessel B is
a)alphaxgamma1xgamma2/gamma1+gamma2
b)gamma1-gamma2/2alpha
c)gamma1-gamma2+alpha/3
d)gamma1-gamma2/3+alpha
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