# NEET Physics Mechanical Properties of Fluids Questions Solved

A spherical liquid drop of radius R is divided into eight equal droplets. If surface tension is T, then the work done in this process will be

(a) $2{\mathrm{\pi R}}^{2}\mathrm{T}$                        (b) $3{\mathrm{\pi R}}^{2}\mathrm{T}$

(c) $4{\mathrm{\pi R}}^{2}\mathrm{T}$                         (d) $2{\mathrm{\pi RT}}^{2}$

(c) $\mathrm{W}=4{\mathrm{\pi R}}^{2}\mathrm{T}\left({\mathrm{r}}^{1/3}-1\right)=4{\mathrm{\pi R}}^{2}\mathrm{T}\left({8}^{1/3}-1\right)=4{\mathrm{\pi R}}^{2}\mathrm{T}$

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