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Why is the value of (dᵞ/dA) =0 in case of a liquid film?

Why is the value of (dᵞ/dA) =0 in case of a liquid film? Correct Answer Liquid is unable to support shear stresses

For a liquid the shear stress is something which is unbearable and it won’t be able to support that, so the atoms within the liquid can rearrange and redistribute at the time when they stretch and thereby maintain a constant surface structure. Solids are much more viscous and here the transfer of atoms occurs from the bulk to the surface.

Related Questions

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Statements : All film stars are playback singers. All film directors are film stars.

Conclusions :
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