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A hydrophilic surface is characterised by the contact angle at the water solid interface. The value of contact angle should be
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$ < 90^{\circ}$
For a hydrophilic surface, the contact angle at
the water solid interface is less than $90^{\circ}$ i.e., $ < 90^{\circ}$. Since, adhesive force between liquid and hydrophilic surface is very high. Hence, the value of contact angle should be less than $90^{\circ}$.
the water solid interface is less than $90^{\circ}$ i.e., $ < 90^{\circ}$. Since, adhesive force between liquid and hydrophilic surface is very high. Hence, the value of contact angle should be less than $90^{\circ}$.
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