A wooden block of density `860 kg//m^(3)` at `0^(@)C` is floating on bezene liquid of density `900 kg/m^(3)` at `0^(@)C`. The temperature at which the block just submerge in benzene is
`[gamma_(wo od)=8xx10^(-5//@)c, gamma_("benzene")=12xx10^(-4//@)c]`